From the OpenXCom developer labs the following communiqué arrived:
Oh yes, fully playable 0.9 is officially here! Spread the word! Tell your friends! Get rid of all your old versions and saves, this one is gonna top them all! If you’ve been using the Git builds, then changing the save version to "0.9" should still work.
Currently only Windows downloads are available, other platforms/versions will follow, in the meantime you can build from the source.
They're getting chirpy too at OpenXcom's HQ with a revamped website, a new twitter account and a vivacious account of the veritable deluge of fixes and improvements this new build brings.
We do think you can't yet capture a live Muton Commander, but the way things are going we daresay you shouldn't be too surprised to find one in containment one of these days...