User blog comment:Master Sima Yi/Assassinews 19-03-'14 – Two Assassin's Creeds for 2014?: Unity and Comet/@comment-24849873-20140627131803/@comment-5546424-20140627163012

I'm not sure about that. The video gives me the idea that we're continuing as the "us" from AC4's modern day but I remember the devs saying that Unity's modern gameplay will be different.