I've been following this game for a while now and, as I noticed the beta is about done, I decided to take the plunge the other day.
I've played a couple of skirmishes against the AI and I can honestly say that I like what I've seen so far. I enjoy the pace of the game and the emphasis on strategic planning on a large scale and map control. Although I have seen some complaints about lack of units and little difference between races, I find that to be a strength more than a weakness; it allows the game to be more balanced and focused on the strategic elements of the game.
My only complaint thus far is a minor one. I find that, when I move large groups of units, my medics always want to move out in front of everyone and, thus, get killed unless I micro them. I also noticed that medics can't heal each other, which doesn't make much sense to me.
Other than those minor points, I can say I'm very happy with my purchase thus far and look forward to really diving more into this one!
Very nice work.