If you’re ready for more testing, Valve has a surprise for you. No not GlaDOS’s surprise. The company has announced Portal 2 DLC #1 will bring new test chambers, leaderboards, challenge mode for multiplayer and singleplayer modes, and is targeted for a release this summer.
Portal 2 DLC #1 will be available on PC, Mac, Xbox 360, and Playstation 3 platforms.