diff --git a/sdk/core/azure-core/CHANGELOG.md b/sdk/core/azure-core/CHANGELOG.md
index 90e3b12f5520e..58b2a8cc47300 100644
--- a/sdk/core/azure-core/CHANGELOG.md
+++ b/sdk/core/azure-core/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## 1.11.1 (Unreleased)
 
+### Features
+
+- Added `azure.core.messaging.CloudEvent` model that follows the cloud event spec.
 
 ## 1.11.0 (2021-02-08)
 
diff --git a/sdk/eventgrid/azure-eventgrid/CHANGELOG.md b/sdk/eventgrid/azure-eventgrid/CHANGELOG.md
index 7826d7f3b0a64..42d1fc88db701 100644
--- a/sdk/eventgrid/azure-eventgrid/CHANGELOG.md
+++ b/sdk/eventgrid/azure-eventgrid/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## 2.0.0b6 (Unreleased)
 
+  **Breaking Changes**
+  - `azure.eventgrid.CloudEvent` is now removed. `azure.core.messaging.CloudEvent` must be used instead.
 
 ## 2.0.0b5 (2021-02-10)