Most likely speculation, or is it ...
Saw this post over on NewCamera: http://thenewcamera.com …x-mark-ii-finally-coming/
"Latest rumors surfaced over the web about Canon 1DX Mark II camera, according latest report the Canon 1DX Mark II preproduction model is being tested by the photographers worldwide.
Take a look at the rumored specification of the camera;
24MP full frame sensor made by Canon – best dynamic range compared to all FF sensor available in the industry
14 fps in RAW + JPEG mode
Advance Autofocus System (compared to the current 61-Point High Density Reticular AF)
New Technology in Viewfinder
Large LCD screen OLED Display
Dual DIGIC 7 image processor – Canon 1DX Mark II is expected to arrive in 2016, the camera will arrive with a new sensor and advance DIGIC 7 image processor
We will post more updates soon as we get any information."
wowzers if thats true...cant wait for the 5D4 update
ISO Improvement and dark/shadow retention and canon has a winner again