Originally posted by ebk and now:
i think the Pentax k-3Ii was the last aps-c camera.
ff is the future
Today there 10 time the market for APSC than FF. FF make for bigger/heavier/pricier lenses (and you also need 1.5X longer focal length) and bodies. There many more people willing to buy K3 + 18-135 (1000$ ?) than K1 + 28-105 (2500$ ?) and even many more thinking of K50 + 18-135 (600$ ?)
For all the people I know, a smaller size is also an important factor. FF is for some enthousiasts and pros. It is also the highend market. Saying everybody would go FF and no more APSC would be like expecting to buy trucks instead of car because they have more carrying capacity.
The next logical step for Pentax is to to provide a new APSC flagship by the end of the year, like they always did. It would likely have the AF of the K1, some articulated screen of K1 or K-S2, improved pixel shift and SR and let's not forget the fantastics ergonomics with of the K1. If they managed to get better high iso, better video or whateverever else to compliment, many people would go to buy one.
A bit before, would make lot of sense to make a refresh of the medium end APSC offering, like they always did. The new entry level body could be a K-S2 inside a K50 body without articulated screen but 20MP sensor and same basic AF? The new mid level body could be a K3 inside a K-S2 body so K3 AF, K3 sensor, but more basic shutter, maybe no pixel shift, 1 single card slot, simpler articulated screen, K-S2 ergonomics.
All of this would make lot of sense to me.