I wonder how well this'll actually work in practice. Not feeling any physical response will probably make it harder to be efficient with the keyboard, and this will rely very heavily on your hands being correctly mapped constantly.
I feel like the floating keyboard will be analogous to the on-screen keyboard on game consoles – it works for the occasional couple of words or sentences, but for any sort of extensive use, you’re gonna want a hardware keyboard.
And honestly, that’s okay. It’s good that they’re open about the hand fatigue and admitting that this isn’t the solution to all-day typing.