MacOS Big Sur

macOS Big Sur (version 11) is the seventeenth major release of macOS from Apple, succeeding macOS Catalina (version 10.15). It was announced on June 22 at the 2020 Worldwide Developers Conference and released on November 12, 2020. It was succeeded by macOS Monterey (version 12) on October 25, 2021.
==New features==
Big Sur features an iPadOS-style dock, translucent menus, and other new features closely tied to iOS 14.WWDC Special Event — June 22 by Apple, YouTube. 2020-06-22.
=== Changes ===
* App design changes introducing full-height sidebars and more integrated toolbars.
* Simplified Dock interface.
* Application icons now conform to iOS' Round Rect boxes.
* Control Center arrives to the Mac.
* Notification Center is now more iOS-like, with grouped notifications in-line with widgets, and all interactive.
* Safari: improved performance and energy consumption, new privacy protections, more customizable home screen, in-tab previews, data breach notifications, privacy reports, on-system translation service.
* Messages: group tracking, contextual linking, pinned conversations, inline replies, mentions, group photos, improved Memoji, stickers, hashtags and message searching.
* Maps: new trip-planning tools, location research tools, guides, EV and bicyle-centric route planning, 3D look Around, charging station tracking, indoor maps.
* App Store: Safari Extensions get their own area, privacy information enhanced.
* Photos: retouch now machine learning enhanced.
* Peripherals: AirPods now automatically switch across devices using macOS 11, iOS 14, iPadOS 14 and later.
* HomeKit: improved face recognition and activity zones.
* Music: iTunes/Apple Music now includes a Listen Now tab for curated music.
* Siri: better website integration.
* Software Update: improved updating mechanism; non-interactive bits happen in the background, update process sped up.
* Startup: The Mac startup chime is once again played by default upon booting.
* USB: Added USB4 support.
* Apple Silicon: Added support for new Macs with the Apple M1 processor, the MacBook Air, MacBook Pro and Mac mini.
==History==
===Development===
Big Sur was developed with Xcode as a dual-binary (referred to as Universal 2) that supports both Intel and Apple processors. Rosetta 2 will allow 64-bit Intel software to run in emulation on Apple processors. The first system provided by Apple to registered developers to run Big Sur natively on an Apple A12Z processor is the 2020 Developer Transition Kit.
===Release history===
Version 	Build 	Release date 	Notes
11.0 beta 1 	20A4299v20A4299w	2020-06-222020-06-??	First developer beta.Pre-installed on early 2020 Developer Transition Kits.
11.0 beta 2 	20A4300b 	2020-07-07 	2nd developer beta.
11.0 beta 3 	20A5323l 	2020-07-22 	3rd developer beta.
11.0 beta 4 	 	2020-08-042020-08-06	4th developer beta.First public beta.
11.0 beta 5 	20A5354i 	2020-08-182020-08-20	5th developer beta.2nd public beta.
11.0 beta 6 	20A5364e 	2020-09-032020-09-08	6th developer beta.3rd public beta.
11.0 beta 7 	20A5374f20A5374g	2020-09-17 	Pre-installed on some 2020 Developer Transition Kits.7th developer beta.
11.0 beta 8 	20A5374i 	2020-09-22 	8th developer beta.4th public beta.
11.0 beta 9 	20A5384c 	2020-09-292020-09-30	9th developer beta.5th public beta.
11.0 beta 10	20A5395g 	2020-10-142020-10-16	10th developer beta.6th public beta.
11.0 	20A2411 	2020-11-?? 	Pre-installed on early Apple M1-based Macs.
11.0.1 	20B2920B50 	2020-11-122020-11-19	First public release.Security update.
11.1 	20C69 	2020-12-14 	Added support for AirPods Max, TV app enhancements, Apple News widgets, and App Store privacy information.
11.2 	20D64 	2021-02-01 	Bug fixes, including improved Bluetooth reliability.
11.2.1 	20D74 	2021-02-09 	
11.2.2 	20D80 	2021-02-25 	
11.2.3 	20D91 	2021-03-08 	
11.3 	20E232 	2021-04-26 	Added support for AirTag, includes improvements for running iPhone and iPad apps on Macs with Apple M1 processors
11.4 	20F71 	2021-05-24 	Added support for Apple Podcasts subscriptions and channels, and includes bug fixes.
11.5 	20G71 	2021-07-21 	Added a Library tab to Apple Podcasts to choose to see followed programs.
11.5.1 	20G80 	2021-07-26 	Security fixes.
11.5.2 	20G95 	2021-08-11 	Bug fixes.
11.6 	20G165 	2021-09-13 	Security fixes.
11.6.1 	20G224 	2021-10-25 	Security fixes.
11.6.2 	20G314 	2021-12-13 	Security fixes.
11.6.3 	20G415 	2022-01-26 	Security fixes.
11.6.4 	20G417 	2022-02-14 	Security fixes.
11.6.5 	20G527 	2022-03-14 	Security fixes.
11.6.6 	20G624 	2022-05-16 	Security fixes.
11.6.7 	20G630 	2022-06-09 	Bug fixes, including the opening of email attachments.
11.6.8 	20G730 	2022-07-20 	Security fixes.
11.7 	20G817 	2022-09-12 	Security fixes.
11.7.1 	20G918 	2022-10-24 	Security fixes.
11.7.2 	20G1020 	2022-12-13 	Security fixes.
11.7.3 	20G1116 	2023-01-23 	Security fixes.
11.7.4 	20G1120 	2023-02-15 	Security fixes.
11.7.5 	20G1225 	2023-03-27 	Security fixes.
11.7.6 	20G1231 	2023-04-10 	Security fixes.
11.7.7 	20G1345 	2023-05-18 	Security fixes.
11.7.8 	20G1351 	2023-06-21 	Security fixes.macOS Monterey 12.6.7 & macOS Big Sur 11.7.8 Updates Released, OS X Daily. 2023-06-22.
11.7.9 	20G1426 	2023-07-24 	Security fixes.macOS Monterey 12.6.8 & macOS Big Sur 11.7.9 Updates Released, OS X Daily. 2023-07-27.
11.7.10 	20G1427 	2023-09-11 	Security fixes.iOS 15.7.9, iPadOS 15.7.9, macOS Monterey 12.6.9, & macOS Big Sur 11.7.10 Released, OS X Daily. 2023-09-11.
==Issues==
===Installation bug===
Users discovered that the macOS Big Sur installer may not accurately anticipate the free space needed for the upgrade, which requires about 35.5 GB plus an additional 13 GB for the installer inself. If the installation process runs out of drive space before the process is completed, the resulting failure would result in an unrecoverable install loop and potential data loss. The installation bug still exists as of the beta version of macOS 11.3.macOS Big Sur upgrade can lead to data loss without ample storage, AppleInsider. 2021-02-09. It is also recommended to check Energy Saver settings so that the computer does not go to sleep during installation.macOS Big Sur 11.0.1 Release Notes, Apple Developer. 2020-11-12.
==Gallery==
Big Sur includes dynamic desktops, which change according to time and lighting conditions.
MacOS Big Sur landscape bright 6K.jpg|Day landscape background (6K)|link=
MacOS Big Sur landscape cloudy 6K.jpg|Dusky landscape background (6K)|link=
MacOS Big Sur landscape dark 6K.jpg|Night landscape background (6K)|link=
MacOS Big Sur desktop bright 6K.jpg|Bright desktop background (6K)|link=
MacOS Big Sur desktop dark 6K.jpg|Dark desktop background (6K)|link=
==References==
==External links==
*macOS Big Sur at Apple (archived 2020-10-01)
**Preview: macOS Big Sur (archived 2020-06-22)
**What's new in macOS Big Sur
**What's new in the updates for macOS Big Sur at Apple Support (2023-11-09)
**Elevate your apps with macOS Big Sur at Apple Developer (archived 2021-06-02)
***AppKit Release Notes for macOS Big Sur 11 
*Big Sur micropatcher by Barry K. Nathan at GitHub
*macOS Big Sur at MacRumors
*macOS Big Sur at the BetaWiki
* at Wikipedia
Category:MacOS
Category:2020 introductions
Category:Landmarks