vALVe postponed it to 2011 to work out some bugs and new features. They don't have a giant staff to work with here anyway, you have to give them credit for making such great games with such small staff. That's all they announced at E3 along with the Steam Network also spreading to ps3. Wow, think about it. tf2 like we have on the computer on the ps3! Except, I hate the ps3
Anyway, I think Steam is starting to steamroll other online game sellers. They've already started establishing a base on the Mac, they're already a super giant on the PC, and they are reaching the PS3 soon. And being the only one that sells vALVe work gives it a huge advantage