Ethan Lee, porter of many games to Linux (and macOS) and the creator of the XNA4 reimplementation FNA today announced the release of FNA 20.05 and a brand new 3D graphics library FNA3D.
FNA, originally a fork of MonoGame, is actually what's used in a lot of Linux game ports like: Owlboy, TowerFall Ascension, Axiom Verge, Bastion, MidBoss, Cryptark and the list continues on for quite a while. Even the recent Windows release Streets of Rage 4 uses FNA.
The actual FNA release 20.05 is quite small, adding in support for the YUV 4:2:2 and 4:4:4 formats to the video player and an update of FAudio plus a few bug fixes. More exciting is the announcement of FNA3D.
Right now, Lee is mentioning that it's in the Beta phase to show that it's usable and they're confident in it but it's still early on. The library already works across Linux, Windows, macOS, iOS, tvOS, Xbox, Switch, and Stadia. Their current intention is to have the ABI frozen and complete moving it all over from FNA to FNA3D by FNA 20.09 in September. Additionally, it appears adding Vulkan support is planned.
Also, Ethan Lee is looking to port more games to Linux and their work is always high-quality so do reach out to them if you want your game ported well. You can find Lee on Twitter and see their impressive list of game ports here.