Nikon released the official sample photos for Nikon D3. Sample photos' ISO ranges from ISO200, 400, 3200 and 6400. All photos are taken with AF-S NIKKOR 24-70mm F2.8G ED and one is taken with Ai AF NIKKOR 85 mm F1.4D(IF). Sample photos are posted as it is, only resizing and 100% were carried out. Full resolution images can be obtained from Nikon Imaging. 

Details of sample 1:

Make = NIKON CORPORATION
Model = NIKON D3
Exposure Time = 1/100"
F Number = F2.8
Exposure Program = Aperture priority
ISO Speed Ratings = 200
Date Time Original = 2007-08-04 09:27:04
Exposure Bias Value = -1.67EV
Metering Mode = CenterWeightedAverage
Focal Length = 36mm
Quality = FINE  
White Balance = AUTO       
Focus Mode = AF-S 
Flash Setting = SLOW
Lens: AF-S NIKKOR 24-70mm F2.8G ED

Sample photo 1: 1/100 F2.8 ISO200

Sample Photo 1: 100% Cropped