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macOS Big Sur (version 11) is the seventeenth major release of macOS, Apple 's operating system for Macintosh computers. It was announced at Apple's Worldwide Developers Conference (WWDC) on June 22, 2020, [4] and was released to the public on November 12, 2020.
From the introduction of machines not supporting the classic Mac OS in 2003 until the introduction of iPhone OS in early 2007, Mac OS X was Apple's only software platform. macOS retained the major version number 10 throughout its development history until the release of macOS 11 Big Sur in 2020.
macOS Monterey (version 12) is the eighteenth major release of macOS, Apple 's desktop operating system for Macintosh computers. The successor to macOS Big Sur, it was announced at WWDC 2021 on June 7, 2021, [3] [4] [5] [6] and released on October 25, 2021.
After sixteen distinct versions of macOS 10, macOS Big Sur was presented as version 11 in 2020, and every subsequent version has also incremented the major version number, similarly to classic Mac OS and iOS.
Catalina is the first version of macOS to support only 64-bit applications and the first to include Activation Lock. [3] [1] It is also the last version of macOS to have the major version number of 10; its successor, Big Sur, released on November 12, 2020, is version 11.
macOS Sequoia (version 15) is the upcoming major release of Apple's macOS operating system. The successor to macOS Sonoma , it was announced at WWDC 2024 on June 10, 2024. [4] It is named after Sequoia National Park , which is located in the Sierra Nevada mountain range.
Safari 15 was released for iOS 15, iPadOS 15, macOS Big Sur and macOS Catalina on September 20, 2021, and later shipped with macOS Monterey. [94] [95] It featured a redesigned interface and tab groups that blended better into the background.
macOS Ventura (version 13) is the nineteenth major release of macOS, Apple 's operating system for Macintosh computers. The successor to macOS Monterey, it was announced at WWDC 2022 on June 6, 2022, and launched on October 24, 2022.