"New combat animations, with bloodshed, decapitations and dismemberments."
It's a lie
Because no, there are no new animations.

And I searched the database well. :)
If a dev comes through here, the only finishers there are (sync_kill) are the soft_matched_combat finishers you put and they are just similar to basic attacks/defense. And these said animations are present in the base game.

I agree. Please developers, add new combat animations with bloody combos and finishes.