The more we see of Tetsuya Mizuguchi's new game, the more the similarities to his previous masterpiece Rez become apparent, but that's OK. Rez with better graphics and lots of rhythmic arm waving will be lots of people's cups of tea.
It's interesting that, while the game is coming to the 360 and PS3, it's only been confirmed so far to use Kinect, and not PlayStation Move. I'd think Move would be the better fit, given all it seems your arms are doing is aiming.