Originally posted by landofcourtness I think if you're expecting Pentax to produce something that rivals the AF features to rival eye-AF (even at the Canon/Nikon level), I would be very surprised. Like many have said, it really comes down to the APS-C vs FF (if FF is of big importance, I would almost urge you to just wait until the upgrades trickle to whenever Pentax releases the FF-option), DSLR vs mirrorless, EVF vs OVF (unless the hybrid thing is a real thing). I think the RP leaves a little bit on the table... the 5fps and then that battery life would make me think again. I also think it's not a camera which video isn't really a plus (w/1.6crop + no DP AF during video). At roughly $1,100... that entry price is hard to beat though! The Z6 is a little more difficult to criticize. I feel like if video features is important, then its already a slam-dunk for the Z6. Battery life is also a pretty big knock on Z6 too. Unlike the RP, I think at $1700 the Z6 is more close to the high end of what the new camera could be. A big knock for both Canon/Nikon mirrorless (even the high end) is the single card-slot... if that means anything.
For me, the biggest thing really comes down to the lenses that you have. If you have very few high quality K-mount lenses, then you could probably entertain switching systems. I really like the FF-compatible lens lineup I've assembled! and I have no want to have to start over. I also continue to look at prices at Sony/Nikon/Canon, and the price of lenses that are similarly spec to what I have... and it is difficult to justify unless I'm a professional. I also love Pentax because I feel like I've never had a camera that just gave me the comfort in ergonomics and the security that it can withstand anything. I don't need Pentax to beat the specs of anyone! If they are just in the ballpark, that is more than fine to me.
I very much doubt that this camera will have a true hybrid viewfinder, meaning that there probably won't be eye AF with the OVF. As with previous cameras, it will be available with live view. With regard to auto focus, the rumor is that this camera is going to have 153 auto focus points that cover most of the sensor. That's a big jump over previous APS-C cameras and depending on what Pentax does with them the auto focus could make some nice progress. I'm not saying D500 level, but fast enough that Pentaxians will be pleased.
The biggest reason to stick with Pentax is the lenses. Certainly you can mount all sorts of lenses on mirrorless cameras, but the new lenses for the Z and RP cameras are not cheap. On the Z side, you have lenses like a 28mm f1.8 lens for 1000 and a 50mm f1.8 for 600. Their 24-70 f2.8 is 2200 and 24-70 f4 is 1000. On the Canon RP side, their 24-70 f2.8 is 2300 and the 28-70 f2 is a cool 3000. Their 15-35 f2.8 is 2300. I suppose you could just mount F mount or EOS mount lenses on those cameras, but then you might as well just buy an SLR and not mess with an adapter.
That said, I think the coming camera is going to be too rich for the OP. Prices of camera gear are not sinking, except for older stuff or entry level stuff. It is pretty clear that as camera sales sink, brands have to figure how to wring more money out of photographers per camera and lens purchased (a bit cynical take, but it feels accurate to me).