A special, complimentary DLC pack will be coming to Red Dead Redemption
in September as a way to show thank-you to the community for the support of the multiplayer component of the game.
Today we can confirm the title for you: the Myths and Mavericks Bonus Pack will feature new fan-favorite multiplayer characters by popular demand (including a certain grizzled ol' gunslinger as pictured above) as well as new multiplayer locations for players of Deathmatch, Grab the Bag, Gang matches and other popular online modes to get busy in.
It was also mentioned that the cries for the return of original settings to "Undead Overrun" have been heard, and a title update prior to the new DLC release will address those issues.
The "Myths & Mavericks" DLC pack is scheduled for release on Xbox Live in September. At this time, it is unknown if this DLC pack will contain achievements.