Ubisoft's announced that it's to hold a "V.I.P" extended multiplayer beta for R.U.S.E on the PC.
All you have to do is sign up for a Ubi account or sign in, go to the instructions page and get more info on how to sign up. The beta isn't starting right now, but it will be kicking off soon.
More info on the beta will be forthcoming shortly.
More through here.
The RTS is out next year for PC, PS3 and 360.