Nikon D800 information has been showing up all over the web today. Here is a compilation of some of it:
The Nikon USA D800 product page has plenty of information.
The Nikon Imaging D800 Product Page includes product images, key features, features explained, specifications, system chart, full resolution D800 and D800E sample photos, a downloadable PDF brochure and a link to the Nikon D800 microsite which features the work of Benjamin Antony Monn, Cliff Mautner, Jim Brandenburg and Rob Van Petten.
Cliff Mautner has a blog post as does Rob Van Petten and John Wright.
Rob Van Petten has a video:
Nikon Australia has created a short product tour video:
Nikon Asia has produced a somewhat longer video:
For D800 preorder opportunities, see this post.