Lead developer Alexandre Julliard announced that Wine 10.0 is going to be releasing in mid-January 2025.

There's been a delay to the latest development build though, due to low activity and Julliard is travelling. So Wine 9.21 is instead coming out February 8th (instead of yesterday).

Two weeks after that, Wine 9.22 will be out and then another two weeks later on December 6, the first Release Candidate for Wine 10.0 will be available and mark the annual code freeze where the focus is purely on bugs and not new features.

That freeze will last until the final 10.0 release due "sometime around mid-January".

Wine 10.0 will have a lot of additions compared to Wine 9.0 like:

Eventually then we will see a new Proton version too based on Wine 10 to continue improving Windows gaming on Steam Deck / Linux from Steam.