Back when Ubisoft was making Assassin’s Creed III, they mentioned that the games only get a number when they introduce a new Assassin. First one got Altair, II got Ezio followed by Brotherhood and Revelations, III introduced Connor, and IV introduced and seemed to conclude Edward’s story.
Since this one is called Unity, and isn’t numbered, I think it may actually be Connor donning robes once more. It’s really the only logical conclusion.
OMG PLS LET THAT BE TRUE