- Updated Erlang compatibility: requires Erlang 25, adds forward‑compatibility with Erlang 26.x/27.0 and will not start on older releases.
- Fixed multiple core and plugin issues, including quorum queue leader handling, consumer churn bugs, Windows env var loading, auto‑heal and credit flow exceptions, classic queue priority reporting, and CLI tool behavior.
- Minor enhancements such as reduced CPU usage for high‑consumer channels, new Prometheus gauge for unreachable peers, additional channel interceptor error type, and info‑level boot‑time logging.
RabbitMQ 3.12.5
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Core server bug fixes: duplicate direct‑reply deliveries, quorum queue recovery issues, malformed AMQP 1.0 frames, topic‑exchange wildcard limits, and OAuth proxy header handling.