At last, Valve's confirmed the second slice of DLC for Left 4 Dead will hit on September 29 for Xbox 360 and PC.
Called 'Crash Course' it's got single-player, multiplayer and co-operative gameplay. It links over from the "No Mercy" campaign to the start of "Death Toll" from L4D1.
Says Valve, "the primary goal of Crash Course is to deliver a complete Versus mode experience in just 30 minutes, resulting in a streamlined version of the game’s existing Versus campaigns. A recharge timer for infected teammates has also been added, and item spawn behavior has changed for more balanced gameplay."
Enjoy.