Amazon Relational Database Service (Amazon RDS) for PostgreSQL 16 Beta 3 is now available in the Amazon RDS Database Preview Environment, allowing you to evaluate the pre-release of PostgreSQL 16 on Amazon RDS for PostgreSQL. You can deploy PostgreSQL 16 Beta 3 in the Preview Environment that has the benefits of a fully managed database, making it simpler to set up, operate, and monitor databases. PostgreSQL 16 Beta 3 in Preview Environment also includes support for logical decoding on read replicas, AWS libcrypto (AWS-LC), and over 80 PostgreSQL extensions.
Source:: Amazon AWS