The PostgreSQL Global Development Group has announced the release of PostgreSQL 18 Release Candidate 1 (RC1), now available for download. This is the first release candidate for the upcoming PostgreSQL 18, with the final release scheduled for September 25, 2025.
As a release candidate, RC1 is very close to what will be in the final version, providing a stable version for final testing before general availability. Users are encouraged to test their applications with RC1 and report any issues.
For more details, you can review the PostgreSQL 18 Beta Release Notes.