I hit some functional roadblocks with the multiplayer part of Open-IG, namely how the game can handle multi-participant space and ground battles.
Ground battle is the simpler one, but the spacewar has some serious implications: how can other parties join in the fight, where can enter into the battlefield, what if the nearby planet wants to join the battle? Not to mention, if there is a huge many-to-many battle, how can I compute the battle statistics? Allies and enemies together complicate matters quite a bit.
Java 7 update 25 has been released with tons of vulnerability fixes.
Eclipse 4.3 has been released which promises performance boost over the quite slow 4.2 series. I found its "Whats new?" here.