Originally posted by robbiec an OVF that is oversized for APSC, could allow a wider AF module, which will suit the K-1 series replacement perfectly, ie reuse the architecture across the different formats.
I don't think it has to do with the AF module*, since it seems the extra magnification comes from improvements to the eyepiece/pentaprism (and the AF module is below the mirror)- but if they can increase the magnification without sacrificing brightness in a format, they can do the same with a larger format. This might lead to a 0.77x OVF in the next FF camera, which would be AFAIK the largest DSLR OVF.
I agree with all the other points; the sensor is almost certainly going to be one of the already-in-use 24 or 26MP Sony BSI sensors (so excellent), they will have an improved frame rate and buffer, there will be improvements made to the AF system and... that's it. I mean, it's a Pentax DSLR. The IQ of 10 year old models is still pretty darn good, ergonomics are the best in the market, the lenses are independent of this specific body. What else do people want?
*That isn't to say the AF module won't see its coverage increased, I just don't think it's necessarily linked to the OVF mag.