We're told that a new line of EF ILC video oriented camera capable of 4K is coming from Canon in 2018. We're told that it won't fall under the Cinema EOS banner.
We've seen patents related to such a camera in the recent past, but this is the first time a known source has mentioned the camera.
This camera could appear ahead of NAB in April. The next Cinema EOS camera is scheduled to be announced after the NAB show, which isn't an unusual thing for Canon to do.
The source was confident it would be a new series of camera, and if it goes well, there's a possibility of a whole series of cameras under the new umbrella.