Sounds like two great places for Pentax to be focusing their efforts.
I've no doubt an optically stabilized lens will be really nice to use. I use stabilized binoculars, and I can say for sure that is a really fantastic experience (wanting a shaky viewfinder to remind you how shaky your hands are... that just sounds like justification for not having OS available
). I'm sure the viewfinder experience with a stabilized lens will benefit just as much. And if it's combining with the already very capable Pentax in body SR, we should hopefully get some of the best stabilization for the given field of view available on any system.
The 50-135 with PLM should make a winning pro level zoom combination on the K3iii. No brainer there. Just hope the price isn't much more than the 16-50 PLM.
This all sounds like good news to me. And it checks off more boxes that obviously come before any potential FF supertele, which is what
I'm really hoping for.