I got this yesterday. I'm an hour into the campaign, and yes, our lil' strategy game is all mature now, and it's addicting as hell. I can already say that I heard the words "death", "murder" and stuff like that, more than I ever should in an AW game.
There's a lot of new units introduced in this, and some existing untis have been renamed, but here's what I made of some of them:
The Bike: a new infantry unit with as much mobility as Recons (in other words, they can travel really far) and they can capture bases.
Flares: They fire rockets that can reveal a 13-square area in Fog of War conditions (in a diamond shape). Useless otherwise.
Anti-Tank: Whereas indirect units can't attack directly, this can attack and defend itself directly.
There's some RPG elements in this too, like your units being able to level up. Also, your COs able to board a unit so that unit and everyone around it gets an Attack and Defense boost.
The music is just great, better than any of the old ones could. And no, it isn't any generic rock.
The only thing I haven't played around with is the online with the voice chat here, but yeah, it would be safe to say this is the best AW game ever. My only problem is that the shop is gone, which only makes single player worth playing through to unlock the extra characters. I also wish Combat mode from AWDS made a return...
Now, I hope someone else gets this so we can do teh online