The Wine 4.3 development release is quite an interesting one, as it includes Ethan Lee's XAudio reimplementation named FAudio.
Quite a big one, since FAudio could help with a lot of audio issues in games and applications. From Lee's own FAudio GitHub page, it notes (for those who didn't already know) the aim is to have "fully accurate DirectX Audio runtime libraries" which includes "XAudio2, X3DAudio, XAPO, and XACT3".
Aside from FAudio, this release also includes:
- Mono engine updated to the latest upstream.
- More modern handling of iconic windows.
- Improved handling of kernel objects.
There's also 45 bugs that were noted as fixed this round. Included in the fixes are bugs squashed with League of Legends, BattlEye, Heroes of Might and Magic VI, Call of Juarez: Bound in Blood and others too.
See their release announcement here.