While I'm nearly certain this has been reported elsewhere, the Beta has taken the game from a very stable platform to a regularly crashing every twenty or thirty turns (on my machine anyway). I will post submit the exception logs etc to the developers.

Another issue I notice that may or may not be a real "issue" is that the Peacekeepers no longer work as advertised or as they did during the last non-beta version of the game. Previously, they really did only attack ships outside of one's own space. Now they attack everything in sight regardless of location or status. In the game in which they appeared, not only did they attach freighters, starbases, warships and everything else they could, they did so when I was not at war with anyone. Further, many of those ships were within my own space. If this is functioning as intended, so be it. If not, it may need a little attention.