Mario Crespi (twitter feed here) created these renderings of an A7V and A8000.
This is the A7V:
An idea for a SONY a7V 3d Why Not? Notice the viewfinder and lens mount have been moved a few millimeters to the left in order to have better ergonomics. 4 dials have values on the digital top screen. Your thoughts? You may share.
This is his A8000 vision:
Toggle the power lever once to turn on or off. Toggle twice to change between video and camera preferences. You could configure the dials to whatever combination of controls you like. You could have favorite combinations of controls. Even favorite values for know places. History.