I have had the pleasure of 45 minutes with a demo D7000 this morning. Thoughts (bad first):
- It's still D90 sized and feels a little small in my hands, certainly with the 17-55 and 70-200 I tried on it (my lenses) it doesn't balance terribly well, I think the grip will sort that though (but I didn't get to try it)
- Magnesium alloy chassis or not it doesn't feel like it's made out of rock like the D300s or D700. Solid though.
- Which does mean it's appreciable smaller and lighter
- AF is seriously good, maybe better than the D300s in my view, no hesitation right across any of the points.
- Handling is very good, despite the lack of physical controls compared to the higher end bodies it handles really naturally, much better than the D90 in my view
- IQ in general is very good, I didn't have the time or means to seriously scientifically test so I didn't bother too much but it's good.
- Video is good, AF in video is reasonably good.
Summary - It's a real winner, you won't regret buying one in any shape or form that I can see, just be aware it isn't huge in the hand and serious glass will result in interesting balance...