Northlight has uncovered a patent application concerning improved images stabilization, especially in wider lenses. The patent includes both in lens image stabilization and electronic stabilization.
There is a reference to in body stabilization in this patent as well.
From US Patent 20180213155:
Note that the second image stabilization is not limited to electronic image stabilization, and may be, for example, image stabilization performed by controlling a mechanical movement of the image capturing device, or image stabilization performed by controlling a movable optical element in the camera body
We are asked fairly often if we see IBIS coming to Canon cameras, and I think it'll happen one day.