Here are some leaked specs of upcoming Canon EOS-1D X Mark III (B&H/Adorama/Amazon). The release date for this camera is in mid-February, 2020. EOS-1D X Mark III will feature with a new image processor called DIGIC X.
The full specs list of Canon EOS-1D X Mark III has already leaked online. The official announcement will be on early next week ahead of CES 2020. According to CR, the US price for Canon EOS-1D X Mark III body will be $6,499.00, $500 more expensive than EOS-1D X Mark II launch price. The Canon EOS-1D X Mark III will also capable of recording 5.4K RAW internal video, this is similar as rumored before.