All those years, same mount. And same lens if I read correctly.
Yes ! Pentax took care of their customers by keeping the K-mount from the first K-mount bodies back in 1975 untill now with the latest Dslr's. One could argue Nikon did even better with their F-mount, unchanged since 1959 (save for some details). Sony somehow seemed to have got the message, as they keep on using the Minolta AF mount.