It is confirmed that the VR on this lens is the 2nd generation VR, not the 3rd generation VR used on the 70-200mm f4 lens.
I've been waiting years for this replacement. I have the old one, and while it can be fun to use, the focusing is painfully slow, and it isn't usable wide-open at 400mm. Stopping down 1-2 stops is required to get anything useful at all, and then you start losing the benefit of VR.
On my D90, I set the aperture to f/7.1 or 8 and set auto ISO to use a minimum shutter speed of 1/100 or so, and hope the ISO doesn't get too high!
Not thrilled that the price is about double what I paid for the original.
I don't understand why Nikon also uses reversed zoom and focus rings on this high level (according to specifications, constructions, and price etc). My impression was that reversed zoom and focus rings are only used on (more or less) consumer-level lenses by Nikon. On the other hand I don't get at all why they should be revsersed on some lenses.
So far my overall impression about this lens:
1. Seems to be excellent in optics (to be confirmed by tests);
2. Too bulky and heavy (price for the IQ?), given its maximum aperture values;
3. The price my be justified by its quality, performance, and features
Frank