- Upgrade baseline to Erlang 25; nodes on older Erlang versions will fail to start (breaking change).
- Fix multiple core and plugin bugs including definition import, dead‑lettering resiliency, connection‑limit errors, add‑vhost CLI, management HTTP API handling, and AMQP 1.0 OAuth2 authentication.
- Improve error responses for connection‑max limits and unsupported HTTP methods.
RabbitMQ 3.11.12
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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.