Granted the "iPhone Shuffle" is usually considered a joke, it would fit what you & I want: scrap or aggressively minimize the screen, focus on I/O via earpiece, cram "amazing talk time" motion-charging battery & radio into clip-on unit, and seamlessly integrate with the iOS ecosystem a la usually-nearby tablet.
The dumbphone has its place, and nobody is addressing it right.
Looks promising ... 'cept that what it is remains unclear. Seems sort of a robust wireless headset extending the phone which remains in your pocket...but it's a lot smarter than just a headset...but it's...uh...a lot of cost/effort to save just pulling out the phone. Getting there, got a ways to go. Put the actual cellular radio in there and you've got something.
The dumbphone has its place, and nobody is addressing it right.