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RabbitMQ `3.11.28` is a maintenance release in the `3.11.x` [release series](https://www.rabbitmq.com/release-information).
This release series [is no longer covered by community support](https://www.rabbitmq.com/release-information).
Please refer to the upgrade section from [v3.11.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.11.0)
if upgrading from a version prior to 3.11.0.
This release requires Erlang 25 and supports Erlang versions up to `25.3.x`.
[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/which-erlang.html) has more details on
Erlang version requirements for RabbitMQ.
### Minimum Supported Erlang Version
As of 3.11.0, RabbitMQ requires Erlang 25. Nodes **will fail to start** on older Erlang releases.
Erlang 25 as our new baseline means much improved performance on ARM64 architectures, [profiling with flame graphs](https://blog.rabbitmq.com/posts/2022/05/flame-graphs/)
across all architectures, and the most recent TLS 1.3 implementation available to all RabbitMQ 3.11 users.
## Changes Worth Mentioning
Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://github.com/rabbitmq/rabbitmq-server/tree/main/release-notes).
### Prometheus Plugin
#### Enhancements
* Metric label values now escape certain non-ASCII characters.
Contributed by @gomoripeti (CloudAMQP).
GitHub issue: [#10196](https://github.com/rabbitmq/rabbitmq-server/pull/10196)
### Management Plugin
#### Bug Fixes
* Reverted a change to `DELETE /api/queues/{vhost}/{name}` that allowed removal of
exclusive queues and introduced unexpected side effects.
GitHub issue: [#10189](https://github.com/rabbitmq/rabbitmq-server/pull/10189)
* Avoid log noise when an HTTP API request is issued against a booting
or very freshly booted node.
Contributed by @gomoripeti (CloudAMQP).
GitHub issue: [#10183](https://github.com/rabbitmq/rabbitmq-server/pull/10183)
### AWS Peer Discovery Plugin
#### Enhancements
* Type spec and test corrections.
Contributed by @illotum (AWS).
GitHub issue: [#10133](https://github.com/rabbitmq/rabbitmq-server/pull/10133)
## Dependency Upgrades
None in this release.
## Source Code Archives
To obtain source code of the entire distribution, please download the archive named `rabbitmq-server-3.11.28.tar.xz`
instead of the source tarball produced by GitHub.
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