Biz-ump
Musou Orochi Z is out in Japan. Should have it tomorrow. I hear it has more enemies on-screen than any previous installments, harder bosses, and you can finally use any characters you want in 2P mode. They also added new fourth outfits. Z is not a new game, but rather a combination of 1 and 2 together, with some new characters and stages as extras. The game is going to be coming out in the States sometime this year, as is the PSP Orochi 2.
It's still essentially the same thing again, and I am NUTSO. I have bought:
-Musou Orochi PS2, sold for the 360 version
-Musou Orochi 360, sold for the PSP version
-Musou Orochi PSP, sold for the PSP sequel
-Musou Orochi 2 PS2, sold for the 360 version
-Musou Orochi 2 360, sold for the PSP version
-Musou Orochi 2 PSP, I kept it!

And now Z on PS3.