Nikon has inadvertently filled out details of the D3x ahead of its official launch, courtesy of an early look at the company's own Nikon Pro magazine. True to expectations, the pro DSLR is mostly a resolution upgrade over the stock D3 and jumps from 12 megapixels to 24.5. It also gains a new 16-bit EXPEED image processor that should improve color performance over the 14-bit standard version.