User blog comment:The.Outsider/Desmond - First Trailer! (AC3)/@comment-4539275-20121025033911/@comment-4975789-20121025155839

They released a video like this last year for Revelations that re-capped the story, but it turned out it was different from the actual one in the game. So perhaps this isn't the real cinematic. It damn sure looks like it though.