That's an exceedingly modest prediction. Can't you do better than that!A 1D X mark 2 replacement will be out before July 2020.
It will have dual CFast card slots
It bugs me that there wasn't even a modest attempt to update the camera. For example, why it would default to CF after having removed/inserted cards when the best performance is with CFast (CF=1, CFAST=2). I tried to get them to modify photo review so you coud go back over a sequence without first having to hit the shutter (you otherwise can only view the last shot). I somehow don't think the 1DX2 is very high prioritity and doubt if an new version will have much added.