That's nice and all, but I don't think that's new. I think that's a prototype of last year's with the camera that they cut. It doesn't make any sense that this year's iPodTouch would look like that. The original iPodTouch was aluminum and looked like the original iPhone. This looks like the 2nd and 3rd gen iPodTouch's which looked similar to the 3G and 3GS iPhones, except with a chrome back, since they didn't need the plastic for cellular reception purposes.
If I were a betting man, I would say that this year's iPodTouch will look similar to that 4th gen iPhone with the black back, aluminum sides and 2 separate volume buttons instead of the rocker.