Valve’s announced that it’s releasing Portal 2 DLC for free on May 8th for PC & Mac.
The new DLC, known as the Perpetual Testing Initiative will allow players to create their own puzzles and share them. Users will then be able to share created puzzles via the Steam Workshop, where other players can also rate them.
Valve also mentions in its press release that “Selected puzzles will automatically be downloaded and installed inside Portal 2.”
There has been no mention of the same treatment for PS3 or Xbox 360.