User blog comment:Master Sima Yi/Assassinews 12-05-'15 — Assassin's Creed: Syndicate has been revealed!/@comment-13471981-20150716160120

I could have sworn I'd read somewhere the grappling hook had navigational purposes only, but one of the people on an Australian livestream (and his French accent leads me to believe he was from Ubisoft) said it also has "other" uses, like combat. I hope that's true, I loved using the Rope Dart in AC3/AC4 in combat.