I haven't tried it since the official release. I actually took some time off starting a while back so as not to burn out on it before it came out. From what I'm hearing though, it's not quite as polished as one would hope. But it's little things, like enemy ships being named MEDIUM_TEMPLATE_03 and so on. Nothing game breaking, but it's sort of jarring for a game that was so polished in alpha.
I'm still a little annoyed at some changes they made to add penalties to expansion. The larger your empire gets, the more of a happiness penalty all of your planets get, which just strikes me as a very ham-fisted balancing mechanic. Why do people on Rigel IV care if there are colonies on Zipzap VII? It's light years away, the two systems have nothing to do with one another. I get that they want to make it harder to play a fast expansion strategy, but there should be some more interesting ways to do it. Make new colonies more of a resource drain for their first few years, then a balancing bonus for a few years after that so that fast expansion cripples your empire but slow expansion remains productive, or something. Then at least you have interesting options. Right now it's just a binary question of whether you have researched the appropriate happiness bonus techs and spammed them all over the place or not.
Anyway, I'm sure I'll get around to playing this again sometime soon. My latest distraction has been Crusader Kings 2, so I need to go and imprison my scheming cousin now.