The publisher also confirmed that full details of the sequel will be released early next week.
"We confirm that Ubisoft will announce all the details of Assassin's Creed 3 on Monday, March 5 at 5pm," the firm said.
Assassin's Creed 3's packaging backs up previous reports that the game will take place during the American Revolution and feature a native American protagonist. The new lead character's identity is expected to be revealed next week.
Ubisoft president Yves Guillemot previously hinted that the next Assassin's Creed title will be the "biggest to date".
Assassin's Creed 3 will be released for PlayStation 3, Xbox 360 and PC in October.
Watch a trailer for the last entry in the series, Assassin's Creed: Revelations, below: