User blog comment:MeDeoPal/Assassin's Creed IV Story Ideas (Ye Be Warned Of Ye Spoilers)/@comment-5702817-20121108022928/@comment-1715386-20121108060926

should have* there*

It'd be impossible for them to create another Assassin's Creed so fast. If they're keeping with the historical accuracy, they'll need at least a year to select, research, and correctly model the chosen location. On top of that, they need to develop a good story (which is very important for a game like AC) and that can take a long time as well. If you want quality Assassin's Creed games, or any game for that matter, developers need to have plenty of time to do their work. That's why Assassin's Creed 2 didn't come out the year following Assassin's Creed 1. They spent a majority of their time researching what players loved and hated. On top of that, they sent a team to Italy to study the architecture and atmosphere.

TL;DR: Wait patiently for the next Assassin's Creed. No need to have Ubisoft do a rushed/bad job.