Define "playable". If "playable" means "to play without crashing much", then yes it's playable. If "playable" means "to have an enjoyable, strategic, fun, and challenging experience", then no it's not playable.
Yeah, this is pretty much dead on. Version 1.1 is stable.
But, quite a few people, myself included, are getting very poor FPS right from the start of the game on systems that are well above the recommended specs.
And, it really feels more like a strategy-lite game than others in the genre.
So, is it playable? Yes and no. While you can play it, you probably won't want to at this point.