Canon announced the EOS-1D X's replacement, the Mark II camera on February 1. The camera will start delivery some time next month. Below is a 4K video from Canon shot with the new body. You can also see the high dynamic range test with the camera here.
Instruction Manuals for the EOS-1D X Mark II camera and the Wired-LAN Transmitter are here. Click on the links above to download them. They are interesting to peruse.
I am very anxious to take delivery of this new DSLR next month because I have a few real world wildlife photography shoots around the globe coming up. You can see my works on MichaelDanielHo.com