so all rumor site shown this 6D with 1/8000 shutter speed, but official Canon website says 1/4000
http://www.usa.canon.com/cusa/professional/products/professional_cameras/digital_slr_cameras/eos_6d#Specifications
this could be a deal breaker for somebody, but the D600 offer the same, i would be surprise with 1/4000.
also this image also shown 1/4000, usually product pic like this shown the maximum capability? like max battery levle, Wifi on, GPS on, highest ISO, etc.
http://www.usa.canon.com/cusa/professional/products/professional_cameras/digital_slr_cameras/eos_6d#Specifications
this could be a deal breaker for somebody, but the D600 offer the same, i would be surprise with 1/4000.
also this image also shown 1/4000, usually product pic like this shown the maximum capability? like max battery levle, Wifi on, GPS on, highest ISO, etc.