User blog comment:The Brave Wolf/Assassin's Creed: Origins - New Rumor May 9th 2017/@comment-413232-20170511231304/@comment-413232-20170511233703

If the title of the game is indeed Origins, and as some leaks suggest the origin story of the Brotherhood, it would make sense to set the game in such an early period.

Regarding the lack of sources about the Vth dynasty, I remember reading about ubisoft setting their new game into such an obscure period to have more freedom while creating the game...