User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-13471981-20140910163215/@comment-2142534-20140912151632

That's probably what it is. I think that if you're out of combat you can assassinate (as in previous games), but this time you can only assassinate with the hidden blade or bare-handed (if you press the other button). I would like that, it makes you use the hidden blade more. Edward and Connor could use any weapon for high profile assassinations.