Amazon RDS Custom now supports SQL Server 2022 CU26
Amazon RDS Custom for SQL Server just got the latest Cumulative Update (CU26 KB5093420) for SQL Server 2022, bringing you the newest fixes and improvements Microsoft released. You can upgrade your instances right now through the RDS Management Console, AWS SDK, or CLI to grab all those performance tweaks and security patches.
source: [aws/whats-new]