Here is the latest Pentax mirrorless interchangeable lens camera, with the latest Pentax HD 24-70mm f/2.8 weather resistant zoom lens. This DSLR lens is 100% fully compatible with the Pentax K-01 without requiring the purchase and use of any adapters or losing any features.
If an updated K-01 successor* were available, its lens compatibility would be a major selling point for those of us with Pentax DSLRs, lenses and accessories. It would be a useful part of an integrated camera
system, and befuddle the media.
*I'd pay a K3iii price for a full-frame Pentax mirrorless, as long as it included the existing awesome lens compatibility, ~56 megapixels (to match the K3iii pixel density), UHS-II support, modern on-sensor autofocus; K3iii speed, ergonomics, touch-screen and menu; the K-1 screen articulation, Pentax build quality, retention of the best K-01 features, including and expanding the number of aspect ratios; built-in WiFi and Bluetooth, built-in GPS, vertical/battery grip; and overall upgrades, with a commitment to building a product advanced customers want, with customer input incorporated into the design and upgrades. Reducing the size and weight should NOT be the primary design factors for this "high performance" level of a professional imaging tool.