Hayabusa has a changed H+KKK. Different kick animation on 3rd K and no longer guard breaks.
He also got some kind of gap closer kick (may be the H+KKK). Moves distance really quickly and has a very fast and weird spin animation.
Couldn't really tell you much otherwise (PP4PK change already mentioned somewhere no doubt.
that's not a new animation that's a new mix up, instead of H+KKK it's H+KKP
and the tornado kick is WR H+K and I believe MASTER said it was unsafe
so far from what I've seen:
Leon is awesome if I used grappler types he'd be an awesome character, holy crap
Ein is looking good-ish he seems to be a mix of DoA4/DoAD however, he's mid tier at best.
Momiji is also looking good definitely replacing either Ayane as my 3rd or Busa as my second.
Hayabusa I'm not too sure about, he's got some new tools and a few buffs but a few nerfs
Hayate is looking MUCH better from DoA5 he's got more DoA3 tools this time which is awesome I may casually pick him up... atm I just play him just for lols.