Amazon MQ now supports in-place major version upgrades for RabbitMQ 4

Amazon MQ now supports in-place version upgrades for RabbitMQ brokers, enabling you to upgrade your brokers to RabbitMQ 4 without creating a new broker or migrating your data. You can now upgrade from RabbitMQ 3.13 to 4.2, directly from the Amazon MQ console, AWS CLI, or API. In-place upgrades preserve your broker configuration, queues, exchanges, bindings, users, and policies. RabbitMQ 4.2 introduces breaking changes including the removal of classic mirrored queues and migration from Mnesia to the Khepri metadata store.