The following review-placeholder pages are now loaded with product images, preorder opportunities and links to other information:
Canon EOS 5D Mark III Review
Canon Speedlite 600EX-RT Flash Review
Canon Speedlite Transmitter ST-E3-RT Review
Canon BG-E11 Battery Grip Review
Note that the Canon Speedlite Transmitter ST-E3-RT is only $319.00 at B&H but is priced at $470.00 at Amazon.com. It is unusual for two major retailers to be asking such disparate prices for a new Canon item, so I suspect an Amazon.com price mistake.
In the USA, BuyDig.com has started charging credit cards for 5D III preorders. (thanks Laszlo)
Check out the CPN site for WFT-E7 Wireless File Transmitter information.
Also check out the CPN site for GP-E2 GPS information.