macOS Big Sur, unveiled in June 2020 at WWDC, is the newest version of macOS, set to be released this fall. macOS Big Sur features an overhauled look, and it's such a big update that Apple bumped the version number to 11. That's right, macOS Big Sur is macOS 11.0.

Apple introduced the biggest design update to macOS since the introduction of Mac OS X with macOS Big Sur, overhauling everything from the curvature of window corners to colors and dock icon designs. The revamped look was designed to feel both fresh and familiar at the same time.

Windows have a lighter appearance for a cleaner look with additional translucency and rounded edges, the Dock is more translucent, app icons have a new uniform squircle shape, menu bars in apps have been redesigned to make them less obtrusive and better able to blend in with your content, system sounds have been entirely redone, and there are new symbols in toolbars, sidebars, and controls to provide clarity and consistency across apps.