Liquid Glass transforms how content appears during playback, keeping videos front and center while accessing controls for fast-forwarding, sleep timers, or Control Center scenes.

By default, app icons have a new layered glass look that gives them dimension, but there's also a new option for "clear" glass-like icons.

Perhaps it's smart for Apple to dial it back while it works on perfecting its next releases, but from a pure technology standpoint, WWDC is a bit of a letdown.