Well, from what I've seen, this time, it'll have:
Interesting - and a bit crazier - new enemies, cool-looking weapons (shapeshifting boombox ftw!), better ways to kill people (double katanas! :o ), a bit more of a serious story, and as usual, Silvia promising a "little prize" after the game's done xD.
I'm also looking forward to it, but for now... *goes play NMH* bwahahahaha