I've been pouring many hours into adding a set of noise comparisons to the Canon EOS 5D Mark III Review page, but the road has been a rough one.
My first take is that the Canon EOS 5D Mark III is an awesome camera, but Canon's Digital Photo Pro software has made the road to showing you this a difficult one. Let me explain this further on the Canon EOS 5D Mark III Review page itself.
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.