CHANGELOG.md in aws-sdk-opensearchservice-1.27.0 vs CHANGELOG.md in aws-sdk-opensearchservice-1.28.0

@@ -1,7 +1,12 @@
 Unreleased Changes
 ------------------
 
+1.28.0 (2023-10-16)
+------------------
+
+* Feature - This release allows customers to list and associate optional plugin packages with compatible Amazon OpenSearch Service clusters for enhanced functionality.
+
 1.27.0 (2023-09-27)
 ------------------
 
 * Feature - Code Generated Changes, see `./build_tools` or `aws-sdk-core`'s CHANGELOG.md for details.