diff --git a/specification/eventgrid/resource-manager/readme.azureresourceschema.md b/specification/eventgrid/resource-manager/readme.azureresourceschema.md
index 5afb66e43cbe..5828a52b731c 100644
--- a/specification/eventgrid/resource-manager/readme.azureresourceschema.md
+++ b/specification/eventgrid/resource-manager/readme.azureresourceschema.md
@@ -6,6 +6,7 @@ These settings apply only when `--azureresourceschema` is specified on the comma
 
 ``` yaml $(azureresourceschema) && $(multiapi)
 batch:
+  - tag: schema-eventgrid-2020-10-15-preview
   - tag: schema-eventgrid-2020-06-01
   - tag: schema-eventgrid-2020-04-01-preview
   - tag: schema-eventgrid-2020-01-01-preview
@@ -22,6 +23,17 @@ batch:
 
 Please also specify `--azureresourceschema-folder=<path to the root directory of your azure-resource-manager-schemas clone>`.
 
+### Tag: schema-eventgrid-2020-10-15-preview and azureresourceschema
+
+``` yaml $(tag) == 'schema-eventgrid-2020-10-15-preview' && $(azureresourceschema)
+output-folder: $(azureresourceschema-folder)/schemas
+
+# all the input files in this apiVersion
+input-file:
+  - Microsoft.EventGrid/preview/2020-10-15-preview/EventGrid.json
+
+```
+
 ### Tag: schema-eventgrid-2020-06-01 and azureresourceschema
 
 ``` yaml $(tag) == 'schema-eventgrid-2020-06-01' && $(azureresourceschema)
diff --git a/specification/eventgrid/resource-manager/readme.go.md b/specification/eventgrid/resource-manager/readme.go.md
index a3120a996830..7b50bc9c71c2 100644
--- a/specification/eventgrid/resource-manager/readme.go.md
+++ b/specification/eventgrid/resource-manager/readme.go.md
@@ -13,6 +13,7 @@ go:
 
 ``` yaml $(go) && $(multiapi)
 batch:
+  - tag: package-2020-10-preview
   - tag: package-2020-06
   - tag: package-2020-04-preview
   - tag: package-2020-01-preview
@@ -25,6 +26,14 @@ batch:
   - tag: package-2017-09-preview
   - tag: package-2017-06-preview
 ```
+### Tag: package-2020-10-preview and go
+
+These settings apply only when `--tag=package-2020-10-preview --go` is specified on the command line.
+Please also specify `--go-sdk-folder=<path to the root directory of your azure-sdk-for-go clone>`.
+
+``` yaml $(tag) == 'package-2020-10-preview' && $(go)
+output-folder: $(go-sdk-folder)/services/preview/$(namespace)/mgmt/2020-10-15-preview/$(namespace)
+```
 
 ### Tag: package-2020-06 and go
 
diff --git a/specification/eventgrid/resource-manager/readme.java.md b/specification/eventgrid/resource-manager/readme.java.md
index e716dfab4652..cbfdd684e562 100644
--- a/specification/eventgrid/resource-manager/readme.java.md
+++ b/specification/eventgrid/resource-manager/readme.java.md
@@ -16,6 +16,7 @@ output-folder: $(azure-libraries-for-java-folder)/azure-mgmt-eventgrid
 
 ``` yaml $(java) && $(multiapi)
 batch:
+  - tag: package-2020-10-preview
   - tag: package-2020-06
   - tag: package-2020-04-preview
   - tag: package-2020-01-preview
@@ -26,6 +27,19 @@ batch:
   - tag: package-2018-05-preview
   - tag: package-2018-01
 ```
+### Tag: package-2020-10-preview and java
+
+These settings apply only when `--tag=package-2020-10-preview --java` is specified on the command line.
+
+Please also specify `--azure-libraries-for-java=<path to the root directory of your azure-sdk-for-java clone>`.
+
+``` yaml $(tag) == 'package-2020-10-preview' && $(java) && $(multiapi)
+java:
+  namespace: com.microsoft.azure.management.eventgrid.v2020_10_15_preview
+  output-folder: $(azure-libraries-for-java-folder)/sdk/eventgrid/mgmt-v2020_10_15_preview
+regenerate-manager: true
+generate-interface: true
+```
 
 ### Tag: package-2020-06 and java
 
diff --git a/specification/eventgrid/resource-manager/readme.ruby.md b/specification/eventgrid/resource-manager/readme.ruby.md
index 18381c4c396e..d2f99ff67a05 100644
--- a/specification/eventgrid/resource-manager/readme.ruby.md
+++ b/specification/eventgrid/resource-manager/readme.ruby.md
@@ -12,6 +12,7 @@ azure-arm: true
 
 ``` yaml $(ruby) && $(multiapi)
 batch:
+  - tag: package-2020-10-preview
   - tag: package-2020-06
   - tag: package-2020-04-preview
   - tag: package-2020-01-preview
@@ -24,6 +25,15 @@ batch:
   - tag: package-2017-09-preview
   - tag: package-2017-06-preview
 ```
+### Tag: package-2020-10-preview and ruby
+These settings apply only when `--tag=package-2020-10-preview --ruby` is specified on the command line.
+Please also specify `--ruby-sdks-folder=<path to the root directory of your azure-sdk-for-ruby clone>`.
+
+``` yaml $(tag) == 'package-2020-10-preview' && $(ruby)
+
+namespace: "Azure::EventGrid::Mgmt::V2020_10_15_preview"
+output-folder: $(ruby-sdks-folder)/management/azure_mgmt_event_grid/lib
+```
 
 ### Tag: package-2020-06 and ruby
 These settings apply only when `--tag=package-2020-06 --ruby` is specified on the command line.