macOS Big Sur is bringing with a sweeping overhaul of the Mac user interface — perhaps the biggest change since Aqua was first introduced two decades ago.
As different as the new interface is, it does build on the shoulders of what came before it. Big Sur still feels like macOS, and that is more important than any given detail Apple may have gotten right or wrong in the next version of macOS. The Dock, Menu Bar and other major elements of the UI are still present. Even things like sidebars — which now extend all the way up the side of their parent window — are immediately recognizable.