Yeah I think I'm going to slow down with the beta so I don't get burned out either. Level 44 is just too high for just 3 maps, especially in 3 weeks everyone will have to start over. I will play with any and all of you if you want, but I probably won't go out of my way to play, not with Fable, Fallout, NBA, Tales, and Gears 2 coming.
Oh the big reveal on Gametrailers (according to the COD forums) is some type of Nazi zombie killing co-op mission after you beat the game.