The FAQ (copied below) mentioned that native transparent data encryption might be included in 16. Is it fair to assume that it will support database level encryption, that is, we can use two encryption keys for two databases in the same server, respectively? How can one verify that?
Q: What features will PostgreSQL 16 have? A: As always, we can't be certain what will go in and what won't; the project has strict quality standards that not all patches can make before deadline. All we can tell you is what's currently being worked on, which includes native transparent data encryption support, continued improvements to logical replication, parallelism, partitioning, and vacuuming, and many more features. By the time 16 is released, though, this list may have changed considerably.