In an interview with GamesRadar, the game director of Assassin's Creed: Brotherhood, Patrick Plourde said that a co-op could be included in future in the series. Patrick explained that the series has a lot of ideas in the pipeline, but for reasons of quality and time can not always be pursued in parallel.

A good co-op requires a campaign structured to advance its use and its exploitation, resulting in creative and technical challenges that would have been incompatible with the efforts made for the introduction of the innovative sector multiplayer Brotherhood. The future promises to be full of news, as always we will keep you updated.