[Brightcolours]

[Citation needed], you're just making things here. The only prototype displayed have ever been the MZ-D in 2000~2001.

 

Oh, and apparently we now have two non DA K-lenses on the roadmap.

Pentax displays prototypes often. They did so for teh to be K10, they did so for the MF camera in several iterations. I don't recall an FF prototype, but they are the only company which often has showed prototype cameras.

 

Anyway: http://photorumors.com/2014/09/16/ricoh-...g-in-2015/