The Assassin's Creed franchise have always tried to keep the historical aspect of the game as accurate as possible throughout the series, and the upcoming title, Black Flag, is not going to be different. Ubisoft have released a trailer for Assassin's Creed 4 Black Flag giving the historical background of the Golden Age of Piracy.
The game i set to hit the PS3, PC, and Xbox 360 Platforms this October, and will also be available for the PS4 and the next gen Xbox at a later unconfirmed date.