User blog comment:Master Sima Yi/Assassinews 12-05-'15 — Assassin's Creed: Syndicate has been revealed!/@comment-4786308-20150704151455/@comment-1888015-20150706012754

Seems so obvious for Ubisoft to want to "connect the dots". Here we have an Indian Assassin, so immediately he must be Arbaaz's son.

I'm sort of hoping that this is just a fake rumour, but I've been disappointed too many times to give it any less of a brush-off even if it did meet my expectations. (in regards to this plot detail)