Add general statement

Author: MikeRayMSFT

docs/sql-server/what-s-new-in-sql-server-ver15.md

@@ -23,7 +23,7 @@ monikerRange: ">=sql-server-ver15||=sqlallproducts-allversions"
 
 ## CTP 2.2
 
-Community technology preview (CTP) 2.2 is the latest public release of [!INCLUDE[sql-server-2019](../includes/sssqlv15-md.md)]. The following features are added or enhanced for [!INCLUDE[sql-server-2019](../includes/sssqlv15-md.md)] CTP 2.2.
+Community technology preview (CTP) 2.2 is the latest public release of [!INCLUDE[sql-server-2019](../includes/sssqlv15-md.md)]. This release includes improvements from previous CTP releases to fix bugs, improve security, and optimize performance. In addition, the following features are added or enhanced for [!INCLUDE[sql-server-2019](../includes/sssqlv15-md.md)] CTP 2.2.
 
 - [Big data clusters](#bigdatacluster)
   - Use SparkR from Azure Data Studio on a big data cluster