Japanese site dcwatch (Google translated) posted a hands-on review and sample pics covering the available ISO range. There are also pics of the camera itself, of the components, and more. For the sample pics scroll to the end of the post.
There are really a lot of images of the 5D3 and its internal components. I found the next two pics particularly interesting: the applied weather sealing.
For more EOS 5D Mark III informations, including world-wide pre-order options click here.