Last post published on the official blog of Left 4 Dead, Valve's team of developers revealed that along with the new additional content coming for Left 4 Dead 2 called "Cold Stream" will be also included another map drawn from the first game, which users will decide by the official forum of the following: "Dead Air", "Death Toll", "Blood Harvest," and "Crash Course". Still no information about date and price of the DLC.