User blog comment:Master Sima Yi/Assassinews 19-03-'14 – Two Assassin's Creeds for 2014?: Unity and Comet/@comment-24760042-20140706163039/@comment-4786308-20140707094823

Well we don't have anything official about this but Amancio said the game will span "a few decades" and another developer said the game begins in 1789 and ends when Robespierre dies in 1794. So I think the game starts when we experience Arno's childhod and the murder of his father around 1776 and then we see Arno a bit before 1789 when he meets with the assassins etc... But most of the game takes place from 1789 to 1794 I guess.