It looks a lot like the previous 3D Castlevania games, just with a little more speed and style. Not that this is a bad thing, as those games weren't anywhere near as bad as their reputation implies (well, except for the N64 Castlevanias that is). Definitely liking the huge epic bosses too.
Personally I'm just hoping it strays from the Metroidvania archetype even a little bit. That explore, find item, backtrack, use item, explore, find item, backtrack, Zzzzz... pattern is just not that fun anymore (in any game, really *glances at Zelda*).