diff --git a/.changeset/twelve-dingos-ring.md b/.changeset/twelve-dingos-ring.md
deleted file mode 100644
index 5d60caeb94..0000000000
--- a/.changeset/twelve-dingos-ring.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-"@azure-tools/typespec-client-generator-core": minor
----
-
-add property `flatten` onto the sdk type for a model's property, corresponding to the `flatten` decorator
diff --git a/.chronus/changes/dependabot-submodules-core-717af64-2024-1-29-10-7-42.md b/.chronus/changes/dependabot-submodules-core-717af64-2024-1-29-10-7-42.md
new file mode 100644
index 0000000000..ce4bba4876
--- /dev/null
+++ b/.chronus/changes/dependabot-submodules-core-717af64-2024-1-29-10-7-42.md
@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@azure-tools/typespec-azure-resource-manager"
+  - "@azure-tools/typespec-client-generator-core"
+---
+
diff --git a/.chronus/changes/dependabot-submodules-core-717af64-2024-1-29-10-8-7.md b/.chronus/changes/dependabot-submodules-core-717af64-2024-1-29-10-8-7.md
new file mode 100644
index 0000000000..9dc50784c2
--- /dev/null
+++ b/.chronus/changes/dependabot-submodules-core-717af64-2024-1-29-10-8-7.md
@@ -0,0 +1,7 @@
+---
+changeKind: feature
+packages:
+  - "@azure-tools/typespec-autorest"
+---
+
+Add support for all properties of openapi `info` object on the `@info` decorator
\ No newline at end of file
diff --git a/core b/core
index 8b062e33bb..717af6421f 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 8b062e33bbc4273d2470fa9fbc182df8ce1ef0b7
+Subproject commit 717af6421f652e63da9812c1497dcbd03b8cec96
diff --git a/packages/samples/specs/data-plane/confidentialledger/confidentialledger.tsp b/packages/samples/specs/data-plane/confidentialledger/confidentialledger.tsp
index 85ade02b5b..29cb78eea7 100644
--- a/packages/samples/specs/data-plane/confidentialledger/confidentialledger.tsp
+++ b/packages/samples/specs/data-plane/confidentialledger/confidentialledger.tsp
@@ -27,7 +27,6 @@ using TypeSpec.OpenAPI;
 )
 @service({
   title: "Confidential Ledger Service",
-  version: "2022-05-13",
 })
 @useDependency(Azure.Core.Versions.v1_0_Preview_2)
 @server(
diff --git a/packages/samples/specs/data-plane/formrecognizer/main.tsp b/packages/samples/specs/data-plane/formrecognizer/main.tsp
index c8de646fff..34ee59d4f0 100644
--- a/packages/samples/specs/data-plane/formrecognizer/main.tsp
+++ b/packages/samples/specs/data-plane/formrecognizer/main.tsp
@@ -11,7 +11,6 @@ using Azure.Core;
 @useAuth(AadOauth2Auth<["https://cognitiveservices.azure.com/.default"]>)
 @service({
   title: "Form Recognizer",
-  version: "2021-09-30-preview",
 })
 @useDependency(Azure.Core.Versions.v1_0_Preview_1)
 @doc("Extracts content, layout, and structured data from documents.")
diff --git a/packages/samples/specs/data-plane/language/authoring/authoring.tsp b/packages/samples/specs/data-plane/language/authoring/authoring.tsp
index 5d27844949..a6033c6bab 100644
--- a/packages/samples/specs/data-plane/language/authoring/authoring.tsp
+++ b/packages/samples/specs/data-plane/language/authoring/authoring.tsp
@@ -19,7 +19,6 @@ using Azure.Core.Traits;
 )
 @service({
   title: "Microsoft Cognitive Language Service - Analyze Text Authoring",
-  version: "202ß2-05-15-preview",
 })
 @useDependency(Azure.Core.Versions.v1_0_Preview_2)
 @route("/authoring/analyze-text/")
diff --git a/packages/samples/specs/data-plane/languageqna/Interface/main.tsp b/packages/samples/specs/data-plane/languageqna/Interface/main.tsp
index 35bed8a897..b0a62cebf8 100644
--- a/packages/samples/specs/data-plane/languageqna/Interface/main.tsp
+++ b/packages/samples/specs/data-plane/languageqna/Interface/main.tsp
@@ -14,7 +14,6 @@ import "./questionanswering-authoring_models.tsp";
 )
 @service({
   title: "Hello world",
-  version: "0.1.0",
 })
 namespace Azure.Language.QnA; //@route("")  // TODO
 
diff --git a/packages/samples/specs/data-plane/languageqna/Raw/main.tsp b/packages/samples/specs/data-plane/languageqna/Raw/main.tsp
index 62ef920196..78f9c83d20 100644
--- a/packages/samples/specs/data-plane/languageqna/Raw/main.tsp
+++ b/packages/samples/specs/data-plane/languageqna/Raw/main.tsp
@@ -26,7 +26,6 @@ using TypeSpec.OpenAPI;
 )
 @service({
   title: "Microsoft Cognitive Language Service - Question Answering - Authoring",
-  version: "21-10-01",
 })
 @useDependency(Azure.Core.Versions.v1_0_Preview_2)
 namespace Azure.QnAMaker;
diff --git a/packages/samples/specs/data-plane/searchindex/main.tsp b/packages/samples/specs/data-plane/searchindex/main.tsp
index aa3530fcea..71d3694b34 100644
--- a/packages/samples/specs/data-plane/searchindex/main.tsp
+++ b/packages/samples/specs/data-plane/searchindex/main.tsp
@@ -24,7 +24,6 @@ import "@azure-tools/typespec-azure-core";
 )
 @service({
   title: "SearchIndexClient",
-  version: "2021-04-30-Preview",
 })
 namespace Azure.SearchIndex;
 
diff --git a/packages/samples/specs/data-plane/searchservice/search-indexer.ops.tsp b/packages/samples/specs/data-plane/searchservice/search-indexer.ops.tsp
index 5f365218ac..3f97a40044 100644
--- a/packages/samples/specs/data-plane/searchservice/search-indexer.ops.tsp
+++ b/packages/samples/specs/data-plane/searchservice/search-indexer.ops.tsp
@@ -16,7 +16,6 @@ import "./searchservice.models.tsp";
 )
 @service({
   title: "Search Service",
-  version: "2021-04-30-Preview",
 })
 namespace Azure.SearchService;
 
diff --git a/packages/samples/specs/resource-manager/arm-library/main.tsp b/packages/samples/specs/resource-manager/arm-library/main.tsp
index 7db08dfa27..2211538937 100644
--- a/packages/samples/specs/resource-manager/arm-library/main.tsp
+++ b/packages/samples/specs/resource-manager/arm-library/main.tsp
@@ -13,6 +13,8 @@ using Azure.ResourceManager;
 
 @service({
   title: "Microsoft.EnvelopeTest",
+})
+@OpenAPI.info({
   version: "2021-09-21-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/codesigning/codesigning.tsp b/packages/samples/specs/resource-manager/codesigning/codesigning.tsp
index 0bc42770c4..31e65558f5 100644
--- a/packages/samples/specs/resource-manager/codesigning/codesigning.tsp
+++ b/packages/samples/specs/resource-manager/codesigning/codesigning.tsp
@@ -12,6 +12,8 @@ using TypeSpec.Versioning;
 @armProviderNamespace
 @service({
   title: "CodeSigningManagementClient",
+})
+@OpenAPI.info({
   version: "2020-12-14-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/contoso/contoso.tsp b/packages/samples/specs/resource-manager/contoso/contoso.tsp
index e7b9b2e322..2fa5818a70 100644
--- a/packages/samples/specs/resource-manager/contoso/contoso.tsp
+++ b/packages/samples/specs/resource-manager/contoso/contoso.tsp
@@ -12,6 +12,8 @@ using Azure.ResourceManager;
 @armProviderNamespace
 @service({
   title: "ContosoProviderHubClient",
+})
+@OpenAPI.info({
   version: "2021-10-01-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/csharpattributetest/main.tsp b/packages/samples/specs/resource-manager/csharpattributetest/main.tsp
index a26da89922..c9ffe95424 100644
--- a/packages/samples/specs/resource-manager/csharpattributetest/main.tsp
+++ b/packages/samples/specs/resource-manager/csharpattributetest/main.tsp
@@ -13,6 +13,8 @@ using Azure.ResourceManager;
 @armProviderNamespace
 @service({
   title: "Microsoft.CSharpAttributeTest",
+})
+@OpenAPI.info({
   version: "2021-09-21-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/customer-managed-keys/main.tsp b/packages/samples/specs/resource-manager/customer-managed-keys/main.tsp
index 2247f91373..c1dd64d1a5 100644
--- a/packages/samples/specs/resource-manager/customer-managed-keys/main.tsp
+++ b/packages/samples/specs/resource-manager/customer-managed-keys/main.tsp
@@ -13,6 +13,8 @@ using Azure.Core;
 @armProviderNamespace("Contoso.CustomerManagedKeyExample")
 @service({
   title: "Contoso.CustomerManagedKeyExample",
+})
+@OpenAPI.info({
   version: "2023-03-01-preview",
 })
 @doc("An example of using the Customer Managed Key Encryption properties in a resource type.")
diff --git a/packages/samples/specs/resource-manager/discriminatortest/main.tsp b/packages/samples/specs/resource-manager/discriminatortest/main.tsp
index 4cddba57b6..291b1764c1 100644
--- a/packages/samples/specs/resource-manager/discriminatortest/main.tsp
+++ b/packages/samples/specs/resource-manager/discriminatortest/main.tsp
@@ -14,6 +14,8 @@ using Microsoft.DiscriminatorTest.Common;
 @armProviderNamespace
 @service({
   title: "DiscriminatorTest",
+})
+@OpenAPI.info({
   version: "2021-10-01-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/envelopetest/main.tsp b/packages/samples/specs/resource-manager/envelopetest/main.tsp
index f28466698b..f055e0c628 100644
--- a/packages/samples/specs/resource-manager/envelopetest/main.tsp
+++ b/packages/samples/specs/resource-manager/envelopetest/main.tsp
@@ -11,6 +11,8 @@ using Azure.ResourceManager;
 
 @service({
   title: "Microsoft.EnvelopeTest",
+})
+@OpenAPI.info({
   version: "2021-09-21-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/liftr.confluent/confluent.tsp b/packages/samples/specs/resource-manager/liftr.confluent/confluent.tsp
index 8d9238161f..4fc6d32785 100644
--- a/packages/samples/specs/resource-manager/liftr.confluent/confluent.tsp
+++ b/packages/samples/specs/resource-manager/liftr.confluent/confluent.tsp
@@ -14,6 +14,8 @@ using Autorest;
 @armProviderNamespace
 @service({
   title: "Microsoft.Confluent",
+})
+@OpenAPI.info({
   version: "2021-03-01-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/liftr.frs/fluidrelay.tsp b/packages/samples/specs/resource-manager/liftr.frs/fluidrelay.tsp
index a082e3a2ef..97bf0fac9f 100644
--- a/packages/samples/specs/resource-manager/liftr.frs/fluidrelay.tsp
+++ b/packages/samples/specs/resource-manager/liftr.frs/fluidrelay.tsp
@@ -12,6 +12,8 @@ using Azure.ResourceManager;
 @armProviderNamespace
 @service({
   title: "Azure Fluid Relay",
+})
+@OpenAPI.info({
   version: "2021-03-12-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/liftr.playfab/playfab.tsp b/packages/samples/specs/resource-manager/liftr.playfab/playfab.tsp
index c322b2725e..1f55bbd97f 100644
--- a/packages/samples/specs/resource-manager/liftr.playfab/playfab.tsp
+++ b/packages/samples/specs/resource-manager/liftr.playfab/playfab.tsp
@@ -12,6 +12,8 @@ using Azure.ResourceManager;
 @armProviderNamespace
 @service({
   title: "Azure PlayFab",
+})
+@OpenAPI.info({
   version: "2021-06-15-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/logz/logz.tsp b/packages/samples/specs/resource-manager/logz/logz.tsp
index 8b15bad41b..ac4021c050 100644
--- a/packages/samples/specs/resource-manager/logz/logz.tsp
+++ b/packages/samples/specs/resource-manager/logz/logz.tsp
@@ -13,6 +13,8 @@ using Azure.ResourceManager;
 @armProviderNamespace
 @service({
   title: "Microsoft.Logz",
+})
+@OpenAPI.info({
   version: "2020-10-01-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1, Azure.Core.Versions.v1_0_Preview_2)
diff --git a/packages/samples/specs/resource-manager/operationsTest/main.tsp b/packages/samples/specs/resource-manager/operationsTest/main.tsp
index a8716076bf..6405e1203d 100644
--- a/packages/samples/specs/resource-manager/operationsTest/main.tsp
+++ b/packages/samples/specs/resource-manager/operationsTest/main.tsp
@@ -12,6 +12,8 @@ using Azure.ResourceManager;
 
 @service({
   title: "Microsoft.OperationsTest",
+})
+@OpenAPI.info({
   version: "2022-11-01-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/servicelinker/servicelinker.tsp b/packages/samples/specs/resource-manager/servicelinker/servicelinker.tsp
index daea95c8bd..e0cc9131a2 100644
--- a/packages/samples/specs/resource-manager/servicelinker/servicelinker.tsp
+++ b/packages/samples/specs/resource-manager/servicelinker/servicelinker.tsp
@@ -13,6 +13,8 @@ using Azure.ResourceManager;
 @armProviderNamespace
 @service({
   title: "Microsoft.ServiceLinker provider",
+})
+@OpenAPI.info({
   version: "2021-01-01-privatepreview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/samples/specs/resource-manager/tagsUpdateTest/main.tsp b/packages/samples/specs/resource-manager/tagsUpdateTest/main.tsp
index 03dfafab21..ef8ea52cc5 100644
--- a/packages/samples/specs/resource-manager/tagsUpdateTest/main.tsp
+++ b/packages/samples/specs/resource-manager/tagsUpdateTest/main.tsp
@@ -14,6 +14,8 @@ using Azure.Core;
 @armProviderNamespace("Microsoft.UpdateTests")
 @service({
   title: "Microsoft.UpdateTests",
+})
+@OpenAPI.info({
   version: "2023-03-01-preview",
 })
 @doc("Testing resource update using a Management API")
diff --git a/packages/samples/specs/resource-manager/tenantResource/main.tsp b/packages/samples/specs/resource-manager/tenantResource/main.tsp
index d71b7fb663..6a20fdd7c4 100644
--- a/packages/samples/specs/resource-manager/tenantResource/main.tsp
+++ b/packages/samples/specs/resource-manager/tenantResource/main.tsp
@@ -2,6 +2,7 @@ import "@typespec/http";
 import "@typespec/rest";
 import "@typespec/versioning";
 import "@azure-tools/typespec-azure-resource-manager";
+import "@typespec/openapi";
 
 using TypeSpec.Rest;
 using TypeSpec.Http;
@@ -11,9 +12,11 @@ using Azure.ResourceManager;
 @armProviderNamespace
 @service({
   title: "Microsoft.Contoso",
-  version: "2022-05-22-preview",
 })
 @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
+@OpenAPI.info({
+  version: "2022-05-22-preview",
+})
 namespace Microsoft.Contoso;
 
 interface Operations extends Azure.ResourceManager.Operations {}
diff --git a/packages/samples/test/output/azure/core/data-plane/confidentialledger/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/azure/core/data-plane/confidentialledger/@azure-tools/typespec-autorest/openapi.json
index 56d8aadc7c..38380b20c4 100644
--- a/packages/samples/test/output/azure/core/data-plane/confidentialledger/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/azure/core/data-plane/confidentialledger/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "Confidential Ledger Service",
-    "version": "2022-05-13",
+    "version": "0000-00-00",
     "x-typespec-generated": [
       {
         "emitter": "@azure-tools/typespec-autorest"
diff --git a/packages/samples/test/output/azure/core/data-plane/confidentialledger/@typespec/openapi3/openapi.yaml b/packages/samples/test/output/azure/core/data-plane/confidentialledger/@typespec/openapi3/openapi.yaml
index 7d5bee226c..322a2e7f0f 100644
--- a/packages/samples/test/output/azure/core/data-plane/confidentialledger/@typespec/openapi3/openapi.yaml
+++ b/packages/samples/test/output/azure/core/data-plane/confidentialledger/@typespec/openapi3/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.0
 info:
   title: Confidential Ledger Service
-  version: 2022-05-13
+  version: 0.0.0
 tags: []
 paths:
   /app/collections:
diff --git a/packages/samples/test/output/azure/core/data-plane/formrecognizer/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/azure/core/data-plane/formrecognizer/@azure-tools/typespec-autorest/openapi.json
index 6bae9fd02a..2088ebcced 100644
--- a/packages/samples/test/output/azure/core/data-plane/formrecognizer/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/azure/core/data-plane/formrecognizer/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "Form Recognizer",
-    "version": "2021-09-30-preview",
+    "version": "0000-00-00",
     "description": "Extracts content, layout, and structured data from documents.",
     "x-typespec-generated": [
       {
diff --git a/packages/samples/test/output/azure/core/data-plane/formrecognizer/@typespec/openapi3/openapi.yaml b/packages/samples/test/output/azure/core/data-plane/formrecognizer/@typespec/openapi3/openapi.yaml
index 44b7f29492..80d6112a29 100644
--- a/packages/samples/test/output/azure/core/data-plane/formrecognizer/@typespec/openapi3/openapi.yaml
+++ b/packages/samples/test/output/azure/core/data-plane/formrecognizer/@typespec/openapi3/openapi.yaml
@@ -1,8 +1,8 @@
 openapi: 3.0.0
 info:
   title: Form Recognizer
-  version: 2021-09-30-preview
   description: Extracts content, layout, and structured data from documents.
+  version: 0.0.0
 tags:
   - name: Management
   - name: Analysis
diff --git a/packages/samples/test/output/azure/core/data-plane/language/authoring/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/azure/core/data-plane/language/authoring/@azure-tools/typespec-autorest/openapi.json
index 2ccfe74612..4c490c1944 100644
--- a/packages/samples/test/output/azure/core/data-plane/language/authoring/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/azure/core/data-plane/language/authoring/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "Microsoft Cognitive Language Service - Analyze Text Authoring",
-    "version": "202ß2-05-15-preview",
+    "version": "0000-00-00",
     "x-typespec-generated": [
       {
         "emitter": "@azure-tools/typespec-autorest"
diff --git a/packages/samples/test/output/azure/core/data-plane/language/authoring/@typespec/openapi3/openapi.yaml b/packages/samples/test/output/azure/core/data-plane/language/authoring/@typespec/openapi3/openapi.yaml
index e6c81e819f..fa32117dd4 100644
--- a/packages/samples/test/output/azure/core/data-plane/language/authoring/@typespec/openapi3/openapi.yaml
+++ b/packages/samples/test/output/azure/core/data-plane/language/authoring/@typespec/openapi3/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.0
 info:
   title: Microsoft Cognitive Language Service - Analyze Text Authoring
-  version: 202ß2-05-15-preview
+  version: 0.0.0
 tags: []
 paths:
   /authoring/analyze-text/projects:
diff --git a/packages/samples/test/output/azure/core/data-plane/languageqna/Interface/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/azure/core/data-plane/languageqna/Interface/@azure-tools/typespec-autorest/openapi.json
index 08e7e1c5a7..cceaba2707 100644
--- a/packages/samples/test/output/azure/core/data-plane/languageqna/Interface/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/azure/core/data-plane/languageqna/Interface/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "Hello world",
-    "version": "0.1.0",
+    "version": "0000-00-00",
     "x-typespec-generated": [
       {
         "emitter": "@azure-tools/typespec-autorest"
diff --git a/packages/samples/test/output/azure/core/data-plane/languageqna/Interface/@typespec/openapi3/openapi.yaml b/packages/samples/test/output/azure/core/data-plane/languageqna/Interface/@typespec/openapi3/openapi.yaml
index 79697fd3b9..9fb841c14c 100644
--- a/packages/samples/test/output/azure/core/data-plane/languageqna/Interface/@typespec/openapi3/openapi.yaml
+++ b/packages/samples/test/output/azure/core/data-plane/languageqna/Interface/@typespec/openapi3/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.0
 info:
   title: Hello world
-  version: 0.1.0
+  version: 0.0.0
 tags: []
 paths:
   /feedback/{projectName}:
diff --git a/packages/samples/test/output/azure/core/data-plane/languageqna/Raw/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/azure/core/data-plane/languageqna/Raw/@azure-tools/typespec-autorest/openapi.json
index ec0fe43084..5dc82e5641 100644
--- a/packages/samples/test/output/azure/core/data-plane/languageqna/Raw/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/azure/core/data-plane/languageqna/Raw/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "Microsoft Cognitive Language Service - Question Answering - Authoring",
-    "version": "21-10-01",
+    "version": "0000-00-00",
     "x-typespec-generated": [
       {
         "emitter": "@azure-tools/typespec-autorest"
diff --git a/packages/samples/test/output/azure/core/data-plane/languageqna/Raw/@typespec/openapi3/openapi.yaml b/packages/samples/test/output/azure/core/data-plane/languageqna/Raw/@typespec/openapi3/openapi.yaml
index 05e26011e8..b7f6ba8016 100644
--- a/packages/samples/test/output/azure/core/data-plane/languageqna/Raw/@typespec/openapi3/openapi.yaml
+++ b/packages/samples/test/output/azure/core/data-plane/languageqna/Raw/@typespec/openapi3/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.0
 info:
   title: Microsoft Cognitive Language Service - Question Answering - Authoring
-  version: 21-10-01
+  version: 0.0.0
 tags: []
 paths:
   /query-knowledgebases/projects:
diff --git a/packages/samples/test/output/azure/core/data-plane/searchindex/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/azure/core/data-plane/searchindex/@azure-tools/typespec-autorest/openapi.json
index d9e4e65fa7..f60b0b7a0b 100644
--- a/packages/samples/test/output/azure/core/data-plane/searchindex/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/azure/core/data-plane/searchindex/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "SearchIndexClient",
-    "version": "2021-04-30-Preview",
+    "version": "0000-00-00",
     "x-typespec-generated": [
       {
         "emitter": "@azure-tools/typespec-autorest"
diff --git a/packages/samples/test/output/azure/core/data-plane/searchindex/@typespec/openapi3/openapi.yaml b/packages/samples/test/output/azure/core/data-plane/searchindex/@typespec/openapi3/openapi.yaml
index 43766e9b0c..b214294190 100644
--- a/packages/samples/test/output/azure/core/data-plane/searchindex/@typespec/openapi3/openapi.yaml
+++ b/packages/samples/test/output/azure/core/data-plane/searchindex/@typespec/openapi3/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.0
 info:
   title: SearchIndexClient
-  version: 2021-04-30-Preview
+  version: 0.0.0
 tags:
   - name: Documents
 paths:
diff --git a/packages/samples/test/output/azure/core/data-plane/searchservice/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/azure/core/data-plane/searchservice/@azure-tools/typespec-autorest/openapi.json
index b69af5efe3..6ba7f28939 100644
--- a/packages/samples/test/output/azure/core/data-plane/searchservice/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/azure/core/data-plane/searchservice/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "Search Service",
-    "version": "2021-04-30-Preview",
+    "version": "0000-00-00",
     "description": "Client that can be used to manage and query indexes and documents, as well as manage other resources, on a search service.",
     "x-typespec-generated": [
       {
diff --git a/packages/samples/test/output/azure/core/data-plane/searchservice/@typespec/openapi3/openapi.yaml b/packages/samples/test/output/azure/core/data-plane/searchservice/@typespec/openapi3/openapi.yaml
index 5debab905b..d249c75a4b 100644
--- a/packages/samples/test/output/azure/core/data-plane/searchservice/@typespec/openapi3/openapi.yaml
+++ b/packages/samples/test/output/azure/core/data-plane/searchservice/@typespec/openapi3/openapi.yaml
@@ -1,8 +1,8 @@
 openapi: 3.0.0
 info:
   title: Search Service
-  version: 2021-04-30-Preview
   description: Client that can be used to manage and query indexes and documents, as well as manage other resources, on a search service.
+  version: 0.0.0
 tags:
   - name: DataSources
   - name: Service
diff --git a/packages/samples/test/output/azure/core/misc/appconfig/@typespec/openapi3/openapi.yaml b/packages/samples/test/output/azure/core/misc/appconfig/@typespec/openapi3/openapi.yaml
index 834c2a0a2d..f2cc5b088e 100644
--- a/packages/samples/test/output/azure/core/misc/appconfig/@typespec/openapi3/openapi.yaml
+++ b/packages/samples/test/output/azure/core/misc/appconfig/@typespec/openapi3/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.0.0
 info:
   title: App Config Service
-  version: 0000-00-00
+  version: 0.0.0
 tags: []
 paths:
   /keys:
diff --git a/packages/samples/test/output/core/petstore/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/core/petstore/@azure-tools/typespec-autorest/openapi.json
index 41467cf195..ece1d43927 100644
--- a/packages/samples/test/output/core/petstore/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/core/petstore/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "Pet Store Service",
-    "version": "2021-03-25",
+    "version": "0000-00-00",
     "description": "This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.",
     "x-typespec-generated": [
       {
diff --git a/packages/samples/test/output/core/rest/petstore/@azure-tools/typespec-autorest/openapi.json b/packages/samples/test/output/core/rest/petstore/@azure-tools/typespec-autorest/openapi.json
index 4afff122a4..b9c8a49efa 100644
--- a/packages/samples/test/output/core/rest/petstore/@azure-tools/typespec-autorest/openapi.json
+++ b/packages/samples/test/output/core/rest/petstore/@azure-tools/typespec-autorest/openapi.json
@@ -2,7 +2,7 @@
   "swagger": "2.0",
   "info": {
     "title": "Pet Store Service",
-    "version": "2021-03-25",
+    "version": "0000-00-00",
     "x-typespec-generated": [
       {
         "emitter": "@azure-tools/typespec-autorest"
diff --git a/packages/typespec-autorest/src/openapi.ts b/packages/typespec-autorest/src/openapi.ts
index 8ca25357ce..b03e7354ac 100644
--- a/packages/typespec-autorest/src/openapi.ts
+++ b/packages/typespec-autorest/src/openapi.ts
@@ -118,10 +118,10 @@ import {
   checkDuplicateTypeName,
   getExtensions,
   getExternalDocs,
-  getInfo,
   getOpenAPITypeName,
   getParameterKey,
   isReadonlyProperty,
+  resolveInfo,
   shouldInline,
 } from "@typespec/openapi";
 import { buildVersionProjections } from "@typespec/versioning";
@@ -365,13 +365,13 @@ function createOAPIEmitter(
   function initializeEmitter(service: Service, multipleService: boolean, version?: string) {
     const auth = processAuth(service.type);
 
+    const info = resolveInfo(program, service.type);
     root = {
       swagger: "2.0",
       info: {
-        title: service.title ?? "(title)",
-        version: version ?? service.version ?? "0000-00-00",
-        description: getDoc(program, service.type),
-        ...getInfo(program, service.type),
+        title: "(title)",
+        ...info,
+        version: version ?? info?.version ?? "0000-00-00",
         "x-typespec-generated": getEmitterDetails(program),
       },
       schemes: ["https"],
@@ -401,7 +401,7 @@ function createOAPIEmitter(
     operationExamplesMap = new Map();
     operationIdsWithExample = new Set();
 
-    outputFile = resolveOutputFile(service, multipleService, options, version);
+    outputFile = resolveOutputFile(program, service, multipleService, options, version);
   }
 
   function resolveHost(
@@ -2313,6 +2313,7 @@ export function sortOpenAPIDocument(doc: OpenAPI2Document): OpenAPI2Document {
 }
 
 function resolveOutputFile(
+  program: Program,
   service: Service,
   multipleServices: boolean,
   options: ResolvedAutorestEmitterOptions,
@@ -2320,7 +2321,8 @@ function resolveOutputFile(
 ): string {
   const azureResourceProviderFolder = options.azureResourceProviderFolder;
   if (azureResourceProviderFolder) {
-    version = version ?? service.version ?? "0000-00-00";
+    const info = resolveInfo(program, service.type);
+    version = version ?? info?.version ?? "0000-00-00";
   }
   const interpolated = interpolatePath(options.outputFile, {
     "azure-resource-provider-folder": azureResourceProviderFolder,
diff --git a/packages/typespec-autorest/test/info.test.ts b/packages/typespec-autorest/test/info.test.ts
index 3cf5c21849..a467467753 100644
--- a/packages/typespec-autorest/test/info.test.ts
+++ b/packages/typespec-autorest/test/info.test.ts
@@ -16,7 +16,10 @@ describe("typespec-autorest: info", () => {
   it("set the service version with @service", async () => {
     const res = await openApiFor(
       `
-      @service({version: "1.2.3-test"})
+      @service({
+        #suppress "deprecated" "For test"
+        version: "1.2.3-test"
+      })
       namespace Foo {}
       `
     );
diff --git a/packages/typespec-azure-portal-core/src/decorators.ts b/packages/typespec-azure-portal-core/src/decorators.ts
index 07dc4811e5..9d80912a17 100644
--- a/packages/typespec-azure-portal-core/src/decorators.ts
+++ b/packages/typespec-azure-portal-core/src/decorators.ts
@@ -89,6 +89,7 @@ export function $promotion(context: DecoratorContext, target: Model, options: Mo
       }
     } else if (target.namespace) {
       const service = getService(program, target.namespace);
+      // eslint-disable-next-line deprecation/deprecation
       if (service?.version && currentApiVersion !== service.version) {
         reportDiagnostic(program, {
           code: "invalid-apiversion",
diff --git a/packages/typespec-azure-resource-manager/test/resource.test.ts b/packages/typespec-azure-resource-manager/test/resource.test.ts
index 27d7e866d3..994f73d21c 100644
--- a/packages/typespec-azure-resource-manager/test/resource.test.ts
+++ b/packages/typespec-azure-resource-manager/test/resource.test.ts
@@ -81,7 +81,7 @@ describe("typespec-azure-resource-manager: ARM resource model", () => {
     it("allows overriding armProviderNamespace", async () => {
       const { program, diagnostics } = await checkFor(`
       @armProviderNamespace
-      @service({title: "Microsoft.Test", version: "2022-03-01-preview"})
+      @service({title: "Microsoft.Test"})
       
       @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
       namespace Microsoft.Test {
@@ -129,7 +129,7 @@ describe("typespec-azure-resource-manager: ARM resource model", () => {
     it("gathers metadata about ProxyResources", async () => {
       const { program, diagnostics } = await checkFor(`
       @armProviderNamespace
-      @service({title: "Microsoft.Test", version: "2022-03-01-preview"})
+      @service({title: "Microsoft.Test"})
       
       @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
       namespace Microsoft.Test;
diff --git a/packages/typespec-azure-resource-manager/test/rules/operation-usage.test.ts b/packages/typespec-azure-resource-manager/test/rules/operation-usage.test.ts
index b725369754..88812c24e0 100644
--- a/packages/typespec-azure-resource-manager/test/rules/operation-usage.test.ts
+++ b/packages/typespec-azure-resource-manager/test/rules/operation-usage.test.ts
@@ -166,7 +166,7 @@ describe("typespec-azure-resource-manager: improper list by subscription operati
     await tester
       .expect(
         `
-    @service({title: "Microsoft.Foo"; version: "2022-01-10-alpha.1"})
+    @service({title: "Microsoft.Foo"})
     
     @armProviderNamespace
     @useDependency(Azure.ResourceManager.Versions.v1_0_Preview_1)
diff --git a/packages/typespec-client-generator-core/test/public-utils.test.ts b/packages/typespec-client-generator-core/test/public-utils.test.ts
index f83e6234ba..c68eff87c0 100644
--- a/packages/typespec-client-generator-core/test/public-utils.test.ts
+++ b/packages/typespec-client-generator-core/test/public-utils.test.ts
@@ -184,7 +184,6 @@ describe("typespec-client-generator-core: public-utils", () => {
       await runner.compile(`
         @service({
           title: "ApiVersion",
-          version: "1.0.0",
         })
         @server(
           "{endpoint}/{ApiVersion}",
diff --git a/packages/typespec-service-csharp/test/test-host.ts b/packages/typespec-service-csharp/test/test-host.ts
index bb0611c2b6..54d76739d0 100644
--- a/packages/typespec-service-csharp/test/test-host.ts
+++ b/packages/typespec-service-csharp/test/test-host.ts
@@ -46,7 +46,7 @@ export async function createCSharpServiceEmitterTestRunner(
 
 export function getStandardService(code: string): string {
   return `
-  @service({title: "Microsoft.Contoso", version: "2023-03-01-preview"})
+  @service({title: "Microsoft.Contoso"})
   @useDependency(Azure.Core.Versions.v1_0_Preview_2)
     namespace Microsoft.Contoso {
       ${code}