The main reason for the release is to declare compatibility against (and require at least) pulpcore 3.25! Compatibility is declared up to pulpcore <3.40.
Important: The release also contains a number of new features, including deprecations/changed API behaviour. Much of this is preperation for a planned 3.0.0 release of the plugin, which will deprecate “simple” publish workflows, in favour of handling all plugin content in a fully “structured” way.
Have a look at the change log for more details and changes. Pay careful attention to the included deprecations/changed API behaviour!
You can check for known issues or open new ones on the pulp_deb GitHub issue tracker.