Indeed, Liquid Glass does bring somewhat of a major change to iOS 26, or what we would have called iOS 18 (Apple is switching iOS numbers to years, and iOS 26 will release in the fall). I've been using the developer beta of iOS 26 for some weeks now,

iOS 26 looks new and modern. And for once, how Apple describes it — liquid glass — makes sense: it’s a lot of layers of transparent elements overlapping and, in places, the animations are quite… liquidy. Menus and buttons will respond to your touch, with some of them coalescing around your finger and sometimes separating out into new menus.

Apple has confirmed iOS 26’s public launch this fall, following the release of beta 4 to developers and testers with major UI and Apple Intelligence updates.