Details in the release notes.
A couple of asks and recommendations for this release:
Please upgrade. If you’re using your nodes to power a critical service (i.e. pools, exchanges), do so carefully. While this is a minor release with no large changes and we’ve been a lot more careful with code reviews, we’re still in the early days of our release process.
If you have a long-running node, please make sure your peer-to-peer port (3414) is open to others  and increase
peer_max_countto 200 in your
grin-server.toml. I think we’ve slightly underestimated this value and some peers are having a harder time keeping enough connections. There should be only very minor impact in the resources used by your node.
And thanks for taking your part in powering the Grin network!
 A service like https://canyouseeme.org/ can help testing