update changelog (#17150)

xiangyan99 · web-flow · commit b1fa6985d03d · 2021-03-08T00:23:48.000-08:00
diff --git a/sdk/core/azure-core/CHANGELOG.md b/sdk/core/azure-core/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## 1.12.0 (2021-03-08)
 
+This version will be the last version to officially support Python 3.5, future versions will require Python 2.7 or Python 3.6+.
+
 ### Features
 
 - Added `azure.core.messaging.CloudEvent` model that follows the cloud event spec.
