PostgreSQL 19 Slips to November as AI Code Review Finds Bugs Faster Than Humans Can Fix Them

The PostgreSQL Global Development Group has pushed back the general availability of PostgreSQL 19 from late September/early October to November 19, 2026. This delay is not due to any shortcomings in the code itself but rather to the effectiveness of AI-assisted code review. According to Peter Eisentraut, a leading PostgreSQL committer and VP at EDB, the release team had to revert between eight and ten significant features to PostgreSQL 20.

These reverts were not due to architectural issues but rather because AI review surfaced a large number of defect reports that needed to be addressed. During the beta period, AI-assisted review generated around forty defect reports, a task that would have been handled gradually over the following five years. Each of these reports requires a human committer to review, confirm, write a fix, test, and get it reviewed, a process that consumes a significant amount of time.

Notably, the SQL Property Graph Queries (SQL/PGQ) feature was removed due to unresolved issues, and its removal was forecasted to lead to post-release bug discoveries. Despite these cuts, PostgreSQL 19 is still expected to be a strong release, featuring REPACK CONCURRENTLY, which allows for reclaiming disk space without heavy table locking.

The delayed release affects PostgreSQL 20 as well, as it will likely include the reverted features from PostgreSQL 19. This situation highlights the emerging challenge faced by software projects worldwide, where AI reviewers accelerate the detection of bugs but also increase the work required for remediation.