Left 4 Dead's Cold Stream DLC is out later this month on Xbox 360 and PC, Valve has announced.
The add-on - which has been in beta on PC and Mac for over a year - will contain four maps based on the original Left 4 Dead; Blood Harvest, Crash Course, Dead Air and Death Toll, as well as the community made Cold Stream.
Coinciding with the release is an update for the Xbox 360 and PC versions of the game that allows all mutations to be available at all times. "This will allow players to choose to match into games playing Taannkk!, Gib Fest, or even a user created mutation like Confogl," Valve explained on the official blog.
The Cold Stream expansion is out on 24th July. No price has been announced.