Been playing this quite a bit already, and I am absolutely loving it. The updated vehicle physics takes a bit of getting used to, but other than that, I have nothing negative to say about it at all. I am confident this is going to be the advanced military shooter/simulator I've been longing for since ArmA 2. Now I just need some serious people to play it with. :>
I considered this, but then thought: ArmA is usually buggy enough when pressed into discs and launched... I don't even wanna think how buggy/unplayable an alpha version would be.