New touch-responsive Liquid Glass interface design "dynamically reacts" when you touch it, according to Apple.

Who did the glass-like design first? Was it Apple with its Aqua transparency effects in 2000, or Microsoft with its Aero Glass theme in Windows Vista in 2007? Either way, Microsoft seems to think Apple’s Liquid Glass design bears some resemblance to its glass look in Windows Media Center,

Apple revealed iOS 26 featuring Liquid Glass at WWDC 2025, but the lack of an AI killer feature left analysts questioning its competitive edge.

What I’m getting at is that the main features of watchOS 26 are the design and name. Apple Watch will get the same Liquid Glass design as the iPhone, iPad, Mac, and Vision Pro.

Liquid Glass' will introduce glossy, translucent elements across the interface, suggesting a more immersive, fluid experience that Mark Gurman says is designed to echo the 20th anniversary iPhone that it will eventually run on.