“It’s a question we’ve been getting a lot. It’s not a moving forward thing, it’s all based on lineage and on DNA and therefore it has nothing to do with time. The next game could easily go backwards as much as forward, no problem.” - Ubisoft producer Francois Pelland

Basically, this means that Ubisoft is going to take the franchise wherever they think will provide fun, and that includes location and timeline. Assassin's Creed Future, here we come!