http://www.digitaltrends.com/gaming/dead-island-bloodbath-arena-dlc-is-set-for-release-next-week-on-november-22/ It's a survival mode for up to four players, with four different maps to choose from. There will be leaderboards of course, and all experience earned in a Bloodbath mode outing will carry over to your campaign save, which is a nice bonus.
