4.4.0-beta.1-release (Azure#14515)

* change in changelog

* add one more change

* Adding '.' in changelog

* changelog update

* Update CHANGELOG.md

Co-authored-by: Annie Liang <xinlian@microsoft.com>
Co-authored-by: Fabian Meiswinkel <fabian@meiswinkel.com>

sdk/cosmos/azure-cosmos/CHANGELOG.md

@@ -1,9 +1,14 @@
 # Release History
 
 ## 4.4.0-beta.1 (2020-08-27)
-* Added new API to efficiently load many documents (via list of pk/id pairs or all documents for a set ok pk values)
-* Enabled query metrics by default
-* Fixed NPE in GatewayAddressCache
+### New Features
+* Added new API to efficiently load many documents (via list of pk/id pairs or all documents for a set of pk values).
+* Added new `deleteItem` API.
+* Enabled query metrics by default.
+### Key Bug Fixes
+* Fixed NPE in `GatewayAddressCache`.
+* Fixing query metric issue for zero item response.
+* Improved performance (reduced CPU usage) for address parsing and Master-Key authentication.
 
 ## 4.3.2-beta.2 (2020-08-17)
 ### Key Bug Fixes