HTC will soon announce a new line of One Max . The device will be made in the same style and get the same aluminum case. But the dimensions of the smartphone will be significantly greater than that of the current high end. One Max will get screen diagonal of 5.9 inches.
Apparently, One Max will get a fingerprint reader, located just below the rear camera.
In addition to the right edge of the phone you can see the three-pin connector, designed, apparently, to connect to a docking station.