At E3, Gabe Newell announced that the PS3 version of Portal 2 would be the definitive console version of the game with full Steam support. And now, Valve has gone into a few more specifics into what exactly Steam support on a console means. In all honesty, it's pretty fantastic.
Within the Portal 2 game, you'll be able to sign into your Steam account and gain access to your Steam friends list. What can you do with that friends list on your PS3? How about cross-platform chat and multiplayer? So whether you have the game for PC, Mac, or PS3, you'll always be able to play Portal 2 with your friends using different hardware.
The PS3 version will also feature Steam cloud support for game saves. This seemed to me like an odd feature at first, until I read one of the other features of the PS3 version: a download code to unlock Portal 2 for Steam play on PC and Mac. Yeah, you get a free PC/Mac copy of the game with a purchase of the PS3 version. This means you can start playing on the PS3, then take a laptop on the road and (assuming you have an internet connection) load up your cloud-saved progress and continue right where you left off.
"Working together with Sony we have identified a set of features we believe are very compelling to gamers," said Gabe Newell. "We hope to expand upon the foundation being laid in Portal 2 with more Steam features and functionality in DLC and future content releases."
I was previously planning on getting the PC version of Portal 2, but if the PS3 version comes with a PC copy anyway then I might just have to switch my pre-order. Bravo Valve, bravo.