Iron Brigade (formerly known as Trenched) will be hitting Xbox Live Marketplace on the 1st February.
Muir "Woo! @IRONBRIGADEGAME DLC: RISE OF THE MARTIAN BEAR, will be released worldwide on February 1st! Get your ass to Mars! :D",
When asked about the price, Muir "we don't know yet! I have yet to hear back from MSFT about it! I'll tweet it out when I know! :D",
The Rise of the Martian Bear DLC waslast October, and will involve Communist Martians invading. Talk about The Red Planet...