A bit more jammin info from Beezlebubbles thread-
"Char specific details:
-Ash is similar to Remy of SF3 in many ways.
-Shen is a boxer, only uses fist.
-Gato was redrawn, but overall plays just like MOTW version.
-Benimaru's qcbx2+B/D super has gain tremendous speed increase.
-K's new air move is a kick downwards with flames.
-Leona has been weakened; earring bomb now has some interesting properties.
-King is very strong; now her projectile splits into high hit and low hit (instead of 2 mid ones)
-Robert: Fireball can hit low; his spinning kick attack now requires input in mid-move
-Billy regained his uppercut; f+A changed"
All sounds great to me, this very well could be = to/the best kof yet