---
upgrade:
  - |
    The ``[oslo_messaging_rabbit] heartbeat_in_pthread`` config option now
    defaults to ``True``.
    Applications will run RabbitMQ heartbeat in a Python thread by default.
deprecations:
  - |
    ``heartbeat_in_pthread`` has been deprecated and will be removed in a
    future release. If configured, this option should be unset.
