User blog comment:Master Sima Yi/Assassinews 12-05-'15 — Assassin's Creed: Syndicate has been revealed!/@comment-117.206.68.116-20150512181437/@comment-87.213.97.78-20150513135743

According to http://www.gameinformer.com/b/features/archive/2015/05/12/interview-the-finer-points-of-assassins-creed-syndicate.aspx it'll be similar to Unity, which means it's barely there. I guess the modern day assassins finding the descendant of Eve to stop Juno wasn't that important after all (Yes, I am aware of Galina).