It will be interesting to see what the sensor size and lens mount is.
It kind of looks like a Sigma Art lens mounted to the camera in the picture (I don't think any of the Panasonic Micro 4/3 lenses have that kind of profile). Which would suggest Super 35.
I'm hoping that it's an active Micro 4/3 mount with a S35 sensor that can be cropped down to Micro 4/3. This seems to me to be the best of all worlds that it can compete with other S35 cameras, but also fully compatible with AF100 & GH series cameras. But we shall see in June.