The closed beta starts in early July, and it will add a new 5 on 5 competitive mode called "Siege".
It's all about the co-op, baby!
Remember couch co-op? There was something special about having a buddy over, ordering a pizza, and flopping on the couch to marathon through a great game. That intimate kind of cooperative game play has kind of fallen by the wayside in recent years, thanks to the proliferation of stable online matchmaking. As remarkable an achievement as that is, nothing will replace the fun and energy of having a partner sitting right next to you as you triumph over a challenging game. The folks over at Obsidian haven’t forgotten about couch co-op; it’s the focal point for Dungeon Siege III, a game that is at its best when shared.