Well, the "Engrish" is pretty strong with this one. Note the "ornamental" video modes (as opposed to "editing" modes) on the table halfway down this page: http://panasonic.net/avc/lumix/systemcamera/gms/gh3/video_capability.htmlThe new GH3 seems to have an Eye Tracking Autofocus which Pani calls "Eye Sensor AutoFocus", just like the Canon AE2 had. I think that will be very interesting to play around with.
Although, I could just be reading much more into "Eye Sensor Focus" than what is really there. But I don't think I am.
There's a few others like that too, but the "ornamental" video modes cracked me up. Anyway, for all we know "eye sensor focus" could be referring to the viewfinder diopter adjustment.