The game came out yesterday on 360/PS3, so I downloaded the demo and it seemed pretty fun and well made, so I bought it today. However, it's definitely not a Castlevania game. The main character uses a chain whip and there are a few references only the CV hardcore would recognize, and that's where the similarities end. It's more like God of War meets Shadow of the Collossus with Patrick Stuart narrating.
Still, it's been fun so far and I played about 4-5 hours today. Supposedly it's about 20 hours long. The game play is kind of repetitive but it throws in enough to mix it up and keep your attention. The story is narrated in between chapters, and the story has been pretty good so far between this and the in game cut scenes. Can't really say much though since I'm still in basically the beginning of the game. The graphics are equal or better than GoW3, but suffers frame rate issues sometimes, and I don't think its ever a full 60 fps on PS3. The 360 version seems to be a lot more worse off from what I've read, though.
The main problem is the music, a long time staple of the CV series. There are no memorable themes, songs, or anything really. It's all mindless "epic" LotR type music. The voice acting is spot on, however, and Patrick Stuart is the shit.
Oh yeah, and the game literally gives you hundreds of throwing knives to pick up, but you can only hold five to start with (I'm up to 15 max). There are no other items... just throwing knives... which are nearly useless.
Probably not worth $60 (what game is these days?), but definitely worth getting IMO.