^^^ I doubt it. Chell already has her established story with GlaDOS. I'm sure the gameplay modes will be just as long as the other, with varying difficulty with multiplayer. I would also venture a guess that single player and the multiplayer modes takes place at the same time (i.e. we'll see Chell through a window as she slings herself into a different room). We'll just have to wait and find out. 


I'm not buying games just for the privilege to buy another game. Besides, they're indie games and all indie games are crap. Now if you'll excuse me, I'm going back to building a village in Minecraft. 