In a couple of weeks, at its annual Worldwide Developers Conference, Apple could be set to reveal one of its most important and risky products ever: a whole new way of seeing the world.
The “mixed reality” headset is still a secret and a mystery. Though it has been strongly rumoured, it still might never arrive; it would certainly not be a surprise if it did not turn up at that WWDC event, though it would be something of a disappointment given how…