Also see How ARKit 2 works, and why Apple is so focused on AR (Ars Technica)
"The future of augmented reality headgear and smartglasses is still very much in flux. The long-awaited Magic Leap might emerge this year. Microsoft's Hololens has hung in a state of enterprise limbo -- one from which it may finally emerge next year. Little smartglasses like ODG's might get better with Qualcomm's next chips, but don't expect miracles.Here's what Apple's doing to get you excited about AR -- CNET
Then there's Apple. As CNET reported in April, Apple is working on a powerful headset capable of both AR and VR. Whether that version is a "what if" prototype or something akin to what Apple may ship in 2 years is anyone's guess. But you don't need to wait until 2020: Apple's plans for virtual magic are playing out in real-time, right now, on the iPads and iPhones that your currently own."