I’ve just noticed that dpreview.com has a complete review on Nikon’s full frame flagship camera. It’s not that I’m planning to buy D3 in the near future. It’s only my normal geeky interest. I googled around and collected a few reviews too. See them below:

• Nikon D3 review on Digital Photography Review by Simon Joison and Phil Askey
  professional and thorough and detailed material to a level that you can refer to it if you happen to lose the user manual
• Bjørn Rørslett’s D3 review
  I’m sure you read his lens reviews regularly. This review is similar in quality, details and personal opinions with a neat table of categories of application, some high ISO showcasing and some FX and DX comparison.
• James Russell’s review on Luminous Landscape
  a professional’s opinion after shooting more than 7000 frames throughout 8 days
• Moose Peterson’s user report on Nikon D3
  an other big name sharing even his settings of the camera
• Ken Rockwell’s review in Ken Rockwell’s style