Valve has confirmed that they will be releasing their next add-on for Portal 2 on May 8 for PC and Mac...console users will have to wait.
In typical Valve fashion the appropriately titled, 'Perpetual Testing Initiative' will be a level editor that will allow players to create custom level, share them and play them with a simplified puzzle maker. Valve claims that it's one that allows the creation of 'mind bending puzzles without ever leaving the game'.
The 'Perpetual Testing Initiative' works like any other level editor in which you can post your custom levels onto the Steam Workshop where they can be downloaded, played and rated by one and all, with selected levels being automatically downloaded into your Portal 2 game.
Fire up that portal gun and get ready to have your mind blown when level editing comes to PC and Mac next month...