I'm so for the DoW, the Sisters of Battle ought to be a nice lot, I wish the Grey Knights were their own race, as they are made up of inquisition trained psychers rather than standard space marines.
The dark eldar I think of as something of an odd pick though, most people were rooting for the Tyrranids to show up considering that they already included the Necrons (and blew any chance of balance out the airlock).
Not only that but hopefully they add more canon units, or Emperor forbid the Mechundium itself as a standalone race rather than subordinate to the Imperial Guard, It's all about the Princepts and their Titans after all.
Ah I could just go nuts with the myriad of factions that make up 40K -.- and I've only just started reading into the books, but hopefully the Sisters of Battle's main unit is the Daemonifuge, certainly would be a troubling idea that something so small could destroy the warp with barely a thought!
At any rate Starcraft 2 should be pretty good, but at the same time, my Starcraft fire was blazing back in the 90's and dwindled since due to lack of anything showing up for over a decade, so I dunno just how many North American sales there will be, though the Korean ones will definitely be up there.
--EDIT--
Stupid me, I read reviews and whatnot AFTER I post this, looks like they chose some avatar-esque meanie for the main unit for the Sisters of Battle, a pity really...