diff --git a/specification/eventgrid/data-plane/Microsoft.ContainerService/stable/2018-01-01/ContainerService.json b/specification/eventgrid/data-plane/Microsoft.ContainerService/stable/2018-01-01/ContainerService.json
new file mode 100644
index 000000000000..14308bc7a6d6
--- /dev/null
+++ b/specification/eventgrid/data-plane/Microsoft.ContainerService/stable/2018-01-01/ContainerService.json
@@ -0,0 +1,33 @@
+{
+  "swagger": "2.0",
+  "info": {
+    "version": "2018-01-01",
+    "title": "Schema of Azure Kubernetes Service events published to Azure Event Grid",
+    "description": "Describes the schema of the Azure Kubernetes Service events published to Azure Event Grid. This corresponds to the Data property of an EventGridEvent"
+  },
+  "paths": {},
+  "definitions": {
+    "ContainerServiceNewKubernetesVersionAvailableEventData": {
+      "description": "Schema of the Data property of an EventGridEvent for a Microsoft.ContainerService.NewKubernetesVersionAvailable event",
+      "type": "object",
+      "properties": {
+        "latestSupportedKubernetesVersion": {
+          "description": "The highest PATCH Kubernetes version for the highest MINOR version supported by ManagedCluster resource",
+          "type": "string"
+        },
+        "latestStableKubernetesVersion": {
+          "description": "The highest PATCH Kubernetes version for the MINOR version considered stable for the ManagedCluster resource",
+          "type": "string"
+        },
+        "lowestMinorKubernetesVersion": {
+          "description": "The highest PATCH Kubernetes version for the lowest applicable MINOR version available for the ManagedCluster resource",
+          "type": "string"
+        },
+        "latestPreviewKubernetesVersion": {
+          "description": "The highest PATCH Kubernetes version considered preview for the ManagedCluster resource. There might not be any version in preview at the time of publishing the event",
+          "type": "string"
+        }
+      }
+    }
+  }
+}
diff --git a/specification/eventgrid/data-plane/readme.md b/specification/eventgrid/data-plane/readme.md
index 555b2d27c3c4..6fcfc2401860 100644
--- a/specification/eventgrid/data-plane/readme.md
+++ b/specification/eventgrid/data-plane/readme.md
@@ -86,7 +86,7 @@ input-file:
 - Microsoft.Web/stable/2018-01-01/Web.json
 - Microsoft.Communication/stable/2018-01-01/AzureCommunicationServices.json
 - Microsoft.PolicyInsights/stable/2018-01-01/PolicyInsights.json
-
+- Microsoft.ContainerService/stable/2018-01-01/ContainerService.json
 ```
 
 ### Suppression
@@ -180,6 +180,7 @@ input-file:
   - $(this-folder)/Microsoft.Cache/stable/2018-01-01/RedisCache.json
   - $(this-folder)/Microsoft.Web/stable/2018-01-01/Web.json
   - $(this-folder)/Microsoft.Communication/stable/2018-01-01/AzureCommunicationServices.json
+  - $(this-folder)/Microsoft.ContainerService/stable/2018-01-01/ContainerService.json
 
 ```