sorry guys, i didn't know that there are some new posts! Usually i receive notification on my email when it happen but maybe somehow i missed them >.<
Anyway, the new update are: a new optional werewolf boss (he will dissapear if you don't fight him after a few days & he doesn't reduce the peace rating). Some new skills & also some secret skills. One new basic skill, air recovery, useful if you want to avoid the button mashing when ko-ed.
And i think the previous save files won't work. I believe the game will load them fine but it will screw up the game like (wrong bosses appearing etc)