Check both engine and mod github repository to see what's new.
This version contains : OpenArena 0.8.8, OpenArena Community Mappack Vol. 1, OmegA 3.2.8 and the OmegA mappack v4.4.
32bit and vulkan engine for both windows and linux are in my Github if you want them : Github.com
For mac m1 you will need to go to your terminal and do "xattr -c path/to/your/OmegA.app".