http://www.pentaxforums.com/news/cp-2014-interview-with-pentax-japan.html
Question 18: Does Ricoh Imaging plan to tackle the full-frame / professional DSLR market, and do you see cameras with full-frame sensors as something that would fit into your product lineup? Are you still developing this type of product?
Research and development into full-frame is still ongoing. We cannot talk about it yet.