It may have been a glitch. I can create new Aurora Postgres instances, with version 11.4 as the newest supported. RDS (non-Aurora) instances have support for 11

It may have been a glitch. I can create new Aurora Postgres instances, with version 11.4 as the newest supported. RDS (non-Aurora) instances have support for 11.5. None of the big 3 cloud vendors support PG 12 yet. AWS generally is the first to provide support for newer versions, and they usually lag the PG release dates by 6-9 months for RDS and over 12 months for Aurora. [Edit] GCP Versions: https://cloud.google.com/sql/docs/postgres/db-versions https://cloud.google.com/sql/docs/postgres/db-versions Azure Versions: https://docs.microsoft.com/en-us/azure/postgresql/concepts-supported-versions https://docs.microsoft.com/en-us/azure/postgresql/concepts-s... AWS Versions: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_PostgreSQL.html#PostgreSQL.Concepts.General.DBVersions https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_...