I've been following this game like a hawk, and thought I'd post some things that stood out in the Gamespot preview. Note, this was only for the 360.
-> The visuals look fantastic, as does the sound
-> There are two control methods with kinect. The one where you use each hand for a different weopon sounds superior. Instead of pressing buttons, you will be clapping hands and making a Y as in the YMCA method.
-> Using a controller is better if you're after high scores:
''While high scores are possible, especially with the second Kinect control option, they are more challenging due to the peripheral's current limitations''
-> This will in all likelyhood not be a killer app:
''While we appreciate the inclusion of Kinect, we're very grateful that controller support is on hand as well''
-> Eden seems to be very close to what Rez was. Not a bad thing at all imo.
Here's the full preview: http://www.gamespot.com/xbox360/action/childofeden/news.html?sid=6312137&mode=previews&tag=topslot;title;1&tag=stitialclk;gamespace
Ironically, the PS3 Move version will probably turn out to be the best i.t.o control and immersion. The game is just really well suited to being played with a wand, so it's a real shame the PS3 version will only arrive much later.