Left 4 Dead 2 will be receiving free new content in the form of Cold Stream DLC and an update to the game come July 24th.
The Cold Stream campaign has been playable for a year on PC and Mac in the form of a public beta, as have the Blood Harvest, Crash Course, Cold Stream, Dead Air and Death Toll maps but this is the first time the content will come to Xbox 360 and also marks an official, complete release.
An update coming at the same time will allow gamers to play through any of the Mutations modes Valve has previously only made available one at a time.
“The date will be July 24th. There are some other surprises and details we will give you later but for now we just want to confirm an often requested feature. With the update going out at the same time (also for the PC), all of the mutations will 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,” reads the official post from Valve over at the Left 4 Dead Blog.