The DLC has been named Gac Pack and will cost 400 MS points/$4.99. It will unlock the Jack Pack and Shadow Pack content that was only previously available to pre-order owners, along with two new game modes.
The "Assault on the 87th Precinct" mission will be featured in the DLC, and allows you to play as Grant City Anti-Crime Soldiers. You can be either a Sniper, tank or brawler.
The "Riot control" mode puts you in command of Rick and his canine friend Shadow as they battle increasingly difficult waves of GAC troops with an aim to earn points based on speed and battle style.
Our Dead to Rights: Retribution review code is in, so expect to see Manny's thoughts on the game shortly.