User blog comment:Master Sima Yi/Assassinews 19-03-'14 – Two Assassin's Creeds for 2014?: Unity and Comet/@comment-24760042-20140702114028/@comment-13471981-20140702114427

I don't think there's been any info on optional objectives actually. ACIV's constraints were alright to be honest, so either those or a Revelations/Brotherhood type of constraint. Definitely not ACIII's optional objectives, those totally ruined the game imo.