Great with some new ideas on what's in a basic laptop. I wonder: this would need some kind of software support so that the focused application would write what

Great with some new ideas on what's in a basic laptop. I wonder: this would need some kind of software support so that the focused application would write what to display on the keyboard? Meaning it would work only with a small set of applications in the beginning. Also I wonder if this feature will make it into apple's external keyboards?