Advance reviews I've seen have been less than impressed, though.
63% on Gamerankings: http://www.gamerankings.com/htmlpages2/928270.asp?q=99
The most positive review (70% from Gamebrink) starts by saying this:
N3 (Ninety-Nine Nights) is a game that looked really good in concept, but like games often do, the concept got lost somewhere along the road to creation. Going from an ideal perspective, who wouldn’t want a Dynasty Warriors type game with incredible next-gen graphics, an epic story shown from multiple perspectives, and a wide-range of moves that played a resemblance closer to a fighting game than a simple hack and slash? That would have been the game to move systems in Japan and the US. That would have been the action title to define the Xbox 360 for now. But unfortunately that’s not what we got.
Obviously wait for reviews of the US version, but put a little grain of salt into your high hopes, I guess.