I haven't read all 16 pages so I'm not sure if this has already been posted. I checked the Canon (US) site and found some interesting things that are not quite the same as the CR "official specs" (or just missing).
Shutter Speeds 1/4000 to 30 sec., X-sync at 1/180 sec. (Total shutter speed range. Available range varies by shooting mode.)
Center: cross-type at f/5.6; vertical line-sensitive at f/2.8.
Upper and lower AF points: vertical line-sensitive AF at f/5.6.
Other AF points: Horizontal line-sensitive AF at f/5.6.
Here's the linky: http://www.usa.canon.com/cusa/consumer/products/cameras/slr_cameras/eos_6d#Specifications
Yes, it was posted. And we were wondering if the central point is only half cross-type.