diff --git a/specification/compute/quickstart-templates/aliases.json b/specification/compute/quickstart-templates/aliases.json
index 30585fbf3bd0..c3166eef59fc 100644
--- a/specification/compute/quickstart-templates/aliases.json
+++ b/specification/compute/quickstart-templates/aliases.json
@@ -12,7 +12,7 @@
           "CentOS": {
             "publisher": "OpenLogic",
             "offer": "CentOS",
-            "sku": "7.3",
+            "sku": "7.5",
             "version": "latest"
           },
           "CoreOS": {
@@ -22,9 +22,9 @@
             "version": "latest"
           },
           "Debian": {
-            "publisher": "credativ",
-            "offer": "Debian",
-            "sku": "8",
+            "publisher": "Debian",
+            "offer": "debian-10",
+            "sku": "10",
             "version": "latest"
           },
           "openSUSE-Leap": {
@@ -36,23 +36,29 @@
           "RHEL": {
             "publisher": "RedHat",
             "offer": "RHEL",
-            "sku": "7.3",
+            "sku": "7-RAW",
             "version": "latest"
           },
           "SLES": {
             "publisher": "SUSE",
             "offer": "SLES",
-            "sku": "12-SP2",
+            "sku": "15",
             "version": "latest"
           },
           "UbuntuLTS": {
             "publisher": "Canonical",
             "offer": "UbuntuServer",
-            "sku": "16.04-LTS",
+            "sku": "18.04-LTS",
             "version": "latest"
           }
         },
         "Windows": {
+          "Win2019Datacenter": {
+            "publisher": "MicrosoftWindowsServer",
+            "offer": "WindowsServer",
+            "sku": "2019-Datacenter",
+            "version": "latest"
+          },
           "Win2016Datacenter": {
             "publisher": "MicrosoftWindowsServer",
             "offer": "WindowsServer",
diff --git a/specification/compute/quickstart-templates/vm-simple.json b/specification/compute/quickstart-templates/vm-simple.json
index edc226d02023..d2f4bec8f5dc 100644
--- a/specification/compute/quickstart-templates/vm-simple.json
+++ b/specification/compute/quickstart-templates/vm-simple.json
@@ -22,7 +22,7 @@
       "name": "nestedTemplate",
       "type": "Microsoft.Resources/deployments",
       "properties": {
-        "mode": "Incremental",
+        "mode": "incremental",
         "templateLink": {
           "uri": "[variables('templatelink')]",
           "contentVersion": "1.0.0.0"