Excited for more Portal 2 Co-op? Well, if you are, on October 4, Valve will be releasing DLC called Portal 2: Peer Review. In Peer Review, you and a friend will continue the story of P-Body and Atlas while you co-op your way through all new test tracks. Along with that, the DLC will also introduce challenge modes for single player and co-op with leaderboards to compare yourself to friends and the portal community.
Portal 2: Peer Review will be available for the PC, Mac, PS3, and Xbox 360 free of charge.
Valve also took the time to state that the next volume of the Portal 2 soundtrack is now available.