1. The game takes place during the American Revolution. At first there was some confusion as to whether the game took place during the Civil War or the American Revolution. The fact that the flag in the background is the "Betsy Ross flag" is the first piece of evidence that the game is set during the American Revolution. The American Army later used the Betsy Ross flag in Army artillery units in 1834, and in infantry units in 1842, but the British Army had left by then, so this means that the game takes place between the years of the American Revolution (1763-1783).
2. The game's hero is either fighting for the colonies or for a third party (Native Americans). The reason for this is that he is seen attacking a Redcoat in the cover. Redcoat is, of course, the historical term used to describe the British Army.
3. The hero's attire suggests Native American influence. This could mean that he is either an assassin for the Native Americans working against both colonials and redcoats, or that, although working for the colonials, he has some native lineage or influence.
I don't really know how I feel yet about the game's setting. I always thought this franchise lent itself best for an entry or two as a ninja in feudal Japan, and I honestly thought Ubisoft would go that route next, if only because it would be a welcome departure from the first 4 entries.This setting makes me feel as though the changes in both gameplay and graphics/assets will be minimal, and that is not the feeling I wanted to have after the Altair/Ezio saga. In any case, this is a day 1 purchase for me, if only to continue what I started, but I can't help but feel just like I did when I used to watch "LOST"; as in, I had already invested so much time on it, I just HAD to finish it. Oh well . . .
If you have any theories or any additional information, or if you just want to give your opinion, please comment below.