idk how active this forum section is, but i thought id post this

Back in april Valve promised a Dlc for portal 2 for the summer. its almost september and still no DLC.
Valve said at gamescom that summer doesnt end till september and that they do plan on releasing their DLC mid september

the DLC will be free if you own the game

"Whenever it actually gets released, it's hard to imagine any complaints, given that the pack is completely free to those who already own the game. Included in the first DLC pack will be new co-op maps, challenge levels and leaderboard support, for all your speed-run freaks out there."