User blog comment:Master Sima Yi/Assassinews 28-02-'13 — Assassin's Creed IV: Black Flag revealed/@comment-59.149.43.4-20130303151915/@comment-1153722-20130303152139

No, because the modern day story will surely progress. The modern day story is the actual game, and within that modern day story the main character relives the lives of an ancestor. Because this game's modern day story will surely be set after the events of Assassin's Creed III, it is a sequel, not a prequel.