It is also the first macOS version to support Macs with ARM-based processors. Most notably, macOS Big Sur features a user interface redesign that features new blurs to establish a visual hierarchy and also includes a revamp of the Time Machine backup mechanism, among other changes. īig Sur is the successor to macOS Catalina, and was succeeded by macOS Monterey, which was released on October 25, 2021. It was announced at Apple's Worldwide Developers Conference (WWDC) on June 22, 2020, and was released to the public on November 12, 2020. MacOS Big Sur (version 11) is the seventeenth major release of macOS, Apple Inc.'s operating system for Macintosh computers.
