Originally posted by Chris Mak From the interview: "we put our resources mainly to the development of full frame lenses".
So the K1, and of course the "alternative high end APS-C camera" KP are the direct causes for the postponement of a next generation flagship K... series.
But from the interview as a whole, it does appear that the new K3 style flagship will be one of their next important projects, so sept.-oct. 2019 is possible, although that is still some time away.
If they are designing a brand new generation of APS-C flagship it's probably a bit too optimistic to expect it will be out as early as second half 2019. In the interview it sounded as if they just started to design or is about to start designing the K3II replacement, and a camera like this takes at least 2 years to release.
A brand new design from ground up, with new design on the body, new sensor, new AF, plus include all other new things in other cameras since K3 release in 2013 and refine them. And maybe some brand new features we have not seen before.
I was expecting Ricoh to be a year into the development of a K3II replacement by now, with a release planned for late 2019, but now I think I have to set my expectation for second half of 2020.
And as it is already 4-5 years since K3 was released they need to aim for more advancements for the K3II replacement, than it was from K5 to K3, so it may take more time to develop than it usually takes. It's about the same gap in time it was between K10D and K3.