Just checked with head office and its the new "video enhanced" 5Diii. They thought about releasing two 5Diii cameras. One with a video emphasis. Another which was a cheaper FF. But they thought that marketing and naming issues (3D, 7Dii ??) were too much of a headache. Problem solved with a video unit attachment. You just plug it and away you go. Plus this gives you extended battery power, satellite uplink, wifi, and more memory with inbuilt, hot swapable, 2TB HDD.
The model above is fitted with the new 24-70/2.8 IS.