The graphics look quite different from the Naked Sample tech demo. It's much more colourful but all those fancy shaders are missing. Is this a straight port of the PS2's assets? I can't tell (having not played much of the PS2 version).
A couple of other titbits of info. Apparently the game will have some form of gyro controls and will use the touch screen for switching weapons and items. Will be playable at E3 (no surprise there really).
More info at Andriasang.com