It seemed for a little while there, the two biggest players in the Micro Four Thirds world were splitting off into their own separate niches with Olympus going after the pro stills crowd by way of the EM-1 series and Panasonic, the pro video crowd with the GH series.
Just about any photographer craving a camera that can handle both high-speed still photography and 4K/HD-video duty; Anyone seeking complete control of their camera
Serious sports and action shooters; who would be better suited buying a camera with phase detect AF