New beta build! https://wiki.arcengames.com/index.php?title=AI_War_2:Multiplayer_Alpha_And_Beta#Beta_2.734_Bugfixes
You need to use the current_beta branch on Steam or GOG to play this one. If you have trouble with it, there is a most_recent_stable_beta, now, too.
More stuff to come later, but this is basically just a selection of bugfixes that needed to come out sooner than later. Thanks to all the folks who tested the new stuff and found these!
The AI Shield Generators mod by cml has also been updated to be in the new format that hacks use in the game now.
The FRS ships had a number of bugs with them last version, but one thing that has been clarified (as well as being fixed up) is that now their bonuses DO affect the flagship, except for the speed bonus. The tooltips make all of that clear, and the turbo raiders can be in fleets that are +1 larger since they don't help the flagship. This means that ultima bombers pair GREAT with a golem or ark and a collection of frigates, for instance.
The starting defensive fleets have also been toned down, as a balance item in this release. For whatever reason, they wound up otherwise being about 2x as powerful as all other fleets and from what you get from a GCA, etc. Now they're consistent with everything else.
The rest of the stuff was actual bugs, with interface/display issues, FRS mechanics, and some extra officer fleets seeding.