Amazon Relational Database Service (Amazon RDS) for PostgreSQL and Amazon RDS on AWS Outposts now support PostgreSQL major version 14. PostgreSQL 14 includes performance improvements for parallel queries, heavily-concurrent workloads, partitioned tables, logical replication, and vacuuming. PostgreSQL 14 also improves functionality with new capabilities. For example, you can cancel long-running queries if a client disconnects and you can close idle sessions if they time out. In addition, stored procedures now return data.