I’ll make a full list with the next release, but a quick summary is:
1. A new multithreaded battle calculator that is 2x to 10x faster
2. A new AI (called ‘hard ai’ or ‘pro ai’)
3. Savegame size bug is fixed
4. Some other major bug fixes
5. Increased compliance with rules
Mostly I’d want help with testing that the battle calc works perfectly in all situations.
Anything not on gamerman’s google doc should be reported.
Any bug, errors, crashes, freezes, anywhere in the engine, should be reported, though I doubt there is anything of the kind.
I would consider this release to be at least as stable as the current 1.8.0.3 release.