Please read the release notes at https://github.com/JoinMarket-Org/joinmarket-clientserver/blob/master/docs/release-notes/release-notes-0.9.11.md for details on what this release includes.
This release includes removal of support for Python 3.7 (which had been end-of-life since June 2023), so now Python 3.8+ is minimum requirement. Note that currently only Python 3.8, 3.9, 3.10 and 3.11 are supported, not Python 3.12 and newer.
This release includies migrating to modern packaging and source layout, big wallet performance improvements, wallet RPC improvements and fixes and various other bugfixes and minor changes.