Originally posted by pete-tarmigan Since the thread mount is a smaller diameter than the K-mount, the former will always work with K-mount bodies. Since it wouldn't make sense to drop the K-mount on APS-C or 24mmx36mm ("full"-frame) bodies to save a few millimetres and strand thousands of customers, I can't imagine them dropping the K-mount unless they cease manufacturing APS-C and full-frame bodies altogether.
Screw-*drive* for autofocus, not screw-mount.
The kit lenses that come with the bodies still have screw-drives. Screw-drive lenses in the wild probably far outnumber the SDM ones. Don't think they are going to abandon them suddenly. You would see a switch to SDM kit lenses first while the body maintained the screw drive.