Ubisoft writer Jeffrey Yohalem has revealed that the French Revolution setting of the upcoming Assassin's Creed: Unity was teased as far back as 2010's Assassin's Creed Brotherhood.
The ending sequence of that game includes a number of mysterious symbols being projected - the two most prominent being the Phrygian Cap, a symbol of the French Revolution, and the Eye of Providence, a nod towards the North American setting of Assassin's Creed 3.
Yohalem confirmed the deliberate choice of the two symbols today to a fan via Twitter.
@dex3108 Yup and AC3, the symbols pointed to American Revolution and French Revolution.— Jeffrey Yohalem (@jeffreyyohalem) March 25, 2014
Yohalem penned Brotherhood after working on Assassin's Creed 2. He then found fame as the lead writer of Far Cry 3, and is next working on the downloadable role-player Child of Light.