Looking at one myself.
I know it's a totally different ball game to my existing D2x but it does have a pretty good sensor and the video function is attractive for what I need.
Had a play at Focus2012 and was impressed. It's a small body, smaller than I'd normally go for, but it's a good stop-gap for me seeing as Nikon hasn't upgraded its Dxxx range yet. The AF was impressive; used it with a luscious 200mm f/2, but also with a 24-120mm, which wasn't wide enough for my taste at 24mm for a crop sensor but it seemed swift and accurate. Gripped it feels more substantial (obviously) but the overall impression I got from it was of a camera that had good (read: almost pro) build quality at its core, something you don't always associate with this price point and body size.