If you watched Apple’s annual WWDC event this week, or have been even casually observing some of the announcements the company made, you may have noticed something new — something a bit jarring.

Flat UI elements, bolstered with real-world visual cues, make neumorphism easy to "read." Take one look at any screenshot from a pre-iOS 7 iPhone, and you’ll wonder how we ever used such a hideous ...