A lot of fixes and some new stuff for UI.
For Mac M1, look at the description for installing.
This version contains : OpenArena 0.8.8, OpenArena Community Mappack Vol. 1, OmegA 2.7.3, OmegA Mappack, 0.8.8b unofficial patch and a launcher for Windows, Linux and even Mac M1.
Only for Mac M1 : Apple will tell you that your application is broken, you will have to type the commands that you will find below in Terminal after UNZIPPING OmegA.zip IN THE DOWNLOADS DIRECTORY (I am still learning to make my own app).
cd Downloads/OmegA xattr -c "OmegA.app"
after this manipulation, you have authorized the application to launch on your device and removed its "damaged application" status. You can then move it anywhere and no longer need to keep it in the downloads directory. If despite this it still does not work, I invite you to leave a comment