Tomorrow we plan to put out the beta of GalCiv II v1.7. My work has mostly been on tweaking the AI and some of the values. I made morale buildings a bit better and made the spore stuff a bit more expensive.
v1.7 should definitely have stability improvements for players. The new garbage collector code should reduce the memory foot print which will hopefully resolve the problem with out of memory errors that some players have run into.
Another improvement is the AI ship sorting should be significantly faster and keep the AI from touching ships that have been destroyed (a rare but existing crash problem).
I'm pretty happy with what v1.7 has done so far. It definitely needs more play testing since there are quite a few new features and other tweaks in there but I think players will be happy.