Left4Dead 2 with be releasing new DLC called ‘The Passing’ for Xbox 360 and PC to be release late March. The Passing takes place between Dead Center and Dark Carnival. In the beginning and end of campaign, you will encounter the survivors from the first L4D (Bill, Louis, Francis, and Zoey). At the end of the campaign, they will help you fend off the horde while you try to escape.

In the campaign you will find a new weapon that looks like an LMG, as well as a golf club to bash in the heads of zombies. There will be a new kind of uncommon common infected known as ‘Fallen Survivors.’ They carry weapons, health, and all other equipment. You may see one of the running from you, but that’s when you should chase after them and kill them so you can get an item from their corpse. There will be interaction between the new and old survivors, as well as more dialog for all the characters (hurray for more stories about Ellis and his buddy Keith!)

The first Left4Dead will also be receiving DLC that explains how the original survivors get to the point where the new survivors are. Thus linking their stories together.