Good question... Um, tomorrow?
...
Okay, maybe not (I wish). I was just pondering that very question yesterday...
Moving as fast as I can here (that much should be obvious!), but the first release is probably not coming until two major components are at least partially implemented: sound and interface. And I haven't started on either. Sound is easy, but it'll probably take several weeks to hammer out a full framework for the interface. I'm going to completely replace the temporary one I'm using at present.
It could be another few months yet. Even then, the first release is going to be more tech demo than anything, since it probably won't have any AI, geoscape, or full game data/maps etc.
I did just start two months ago