photo via PetaPixel   Nikon's next professional DSLR the D4 should be coming in the 1st quarter of 2012 and the specs have been gathered from various sources. Here are the main ones:   Nikon D4 specs: 16.2 MP 11 fps 100-102,400 native ISO range, expandable to 50 and 204,800 CF + XQD memory