http://biz.yahoo.com/prnews/060130/lam008.html
So, two new races(supposedly), inlcuding the Tau. New singleplayer and multiplayer material und updated tools.
Anyone else in?
Edit: Personally, I'd prefer the second race to be the Tyranids, but considering Winter Assault's ending, it's most likely the Necrons. Eh, suits me fine. Best idea would be to do like AoE 3 did and give the races who have different factions(Orders, etc) some kind of mercenary buildings, from which they could hire other faction's units(Grey Knights, Maleficarum). I really don't know wht to think if they decide to add Dark Eldar. <_<