A while ago, Portal 2 received a major update which released a simple to use in-game map editor for free to anyone who owned the game on PC or Mac. The community's major gripe with the system? The lack of support for co-op maps. Now, Valve has officially announced that the Portal 2 DLC named "Perpetual Testing Initiative" is finally receiving support for co-op made maps. Don't have a buddy that you can play Portal 2 co-op with? Well now is your chance to make one!
Every owner of Portal 2 also received a 75% off coupon which is now available in their Steam inventory, which is intended to help introduce more players to the game. Also mentioned is the inclusion of a 'Quick Play' feature that automatically assembles a play list of some of the highest rated maps available in the Steam Workshop. The update was just released on Steam so feel free to check it out.