I'd say this would be one of the smallest cameras till date with features that are really 'big' and serious! If it has the same sensor as the one in D7000, it means 14bit raw files with 14 stops (!!!!!) of dynamic range (at base ISO) and awesome low light performance at an impressive 16 megapixel resolution. Plus 920,000 dot vari-angle LCD screen, battery life rated at 660 shots (CIPA standard) and 1080p (30fps) video, all in a size not much bigger than Panasonic G2. I am droolling.....
Nikon D5100 In-depth Review
Nikon D5100 In-depth Review