There is one last piece missing in Sony’s puzzle: We got the A7rIII and A7III and by end 2018 we shall get the A7sIII. According to SonyAlphaRumors the camera will have:
4K HDR 60P
The sensor is Exmor RS with new stacked CMOS sensor with integral memory
The number of pixels is unknown.
Sony is nervous about information leakage, it is difficult to obtain detailed specifications.
But according to sources, the A7S III is amazing, it is really amazing.
The sensor is technically superior to a9/fs sensor.
It’s likely this camera will also have the new Sony EVF with 5.76M dots of resolution.