Updated / Left 4 Dead 2 DLC, visitors still on track

Update: Valve has released ten screenshots from The Passing, find them here.

Original story: It’s been confirmed at today’s X10 that the survivors in Left 4 Dead 2 will definitely be getting some company. The Passing, the first round of DLC for the southern-fried zombie shooter, will bring the members of the original Left 4 Dead cast down yonder this spring. Included in the add-in will be a new co-op campaign with associated storylines, new locations for the Survival, Versus, and Scavenge game modes, and a new co-op challenge mode.