Originally posted by JPT It's April 28.
Not bad guessing on my part.
---------- Post added 12-04-16 at 08:29 ----------
BTW I found
this (from the K-1 special site) interesting:
Quote: The current design team consists of designers from both RICOH and former PENTAX. The PENTAX K-1 was the first camera designed by this joint team. First, the design team began to analyze the product concept, led by a veteran of more than 25 years of PENTAX SLR camera design.
So, then - very much a joint effort, but with a lot of weight given to Pentax's design heritage.