CP+ 2015: Up close and personal with Ricoh's full-frame Pentax mockup

After announcing the development of a full-frame DSLR recently, Ricoh is showing a very early mockup at the CP+ show in Yokohama Japan. Although details are extremely limited (limited, in fact, to the words 'Full-frame' in the press release and 'Pentax' written on the front) Ricoh's mockup does give some clues as to the camera's specification. Kind of. Click through for images and some - frankly - rampant speculation.