Liquid Glass is a new software design, or aesthetic, described by Apple CEO Tim Cook as "Expressive. Delightful. But still instantly familiar."

Apple dialed back its announcements at this year's Worldwide Developer Conference (WWDC), opting for practical optimizations over futuristic launches.

The new design system is called Liquid Glass, and brings a return to more pervasive translucency for the OS elements -- the same aesthetic that informs the software for its Vision Pro VR/AR headset.