Thanks to an advertisement on GameInformer's digital magazine, we now know the new DLC for Assassin's Creed IV: Black Flag will release on December 17th on all platforms.
In the new 4+ hour single-player story, players control Adewale, Kenway's shipmate and friend in the regular campaign and takes place 15 years after the events of Black Flag. The DLC, titled Freedom Cry, gives players control of the trained assassin Adewale.
Details beyond that are scarce, although we do know the content is included for season pass holders. Ad hoc price has yet to be revealed but it's safe to safe it will probably be $14.99.