Looks like you will get yer Team Fortress 2 afterall

Valve certainly seems to be keeping busy. At the event, they talked about a game they called Portal, which uses the portal idea from Prey in the form of the gun. I’m not exactly getting how that’s going to work, but it sounds like another intriguing title coming to us via Steam. We’ll keep you posted as more details on any and all of these announcements becomes available.

There you go