This prediction is me going out on a limb. We all know that Apple is working on this screen technology, as the rumors and related patents are old news at this point. They even acquired LuxVue, a manufacturer that specializes in microLED, back in 2014. Just as with OLED, Apple will put this new technology (at least for them, in the case of OLED) on the Watch first, as the smaller screen device with less sales pressure than the iPhone makes a perfect device for an initial rollout. It’s just a matter of time as to when it shows up. Just a hunch on my part, but I think 2018 could be the year.