macOS Catalina (version 10.15) is the sixteenth and current major release of macOS, Apple's desktop operating system for Macintosh computers. It is the successor to macOS Mojave, and was announced at WWDC 2019 on June 3, 2019 and released to the public on October 7, 2019. Catalina is the first version of macOS to support only 64-bit applications and the first to include Activation Lock.
|A version of the macOS operating system|
Screenshot of the macOS Catalina desktop in Dark Mode
|Source model||Closed, with open source components|
|October 7, 2019|
|Latest release||10.15.2 (19C57) (December 10, 2019 ) [±]|
|Latest preview||10.15.3 beta 1 (19D49f) (December 17, 2019 ) [±]|
|Update method||Software Update|
|Kernel type||Hybrid (XNU)|
|License||APSL and Apple EULA|
|Preceded by||macOS 10.14 Mojave|
|Part of a series on|
macOS Catalina runs on all standard configuration Macs that support Mojave. 2010–2012 Mac Pros, which could run Mojave only with a GPU upgrade, are no longer supported. Catalina requires 4 GB of memory, an increase over the 2 GB required by Lion through Mojave.
Catalyst is a new software-development tool that allows developers to write apps that can run on both macOS and iPadOS. Apple demonstrated several ported apps, including Jira and Twitter (after the latter discontinued its macOS app in February 2018).
Dedicated system volume
Users can speak more commands to their devices than Siri allows. On-device machine processing is used to offer better navigation.
Sidecar allows a Mac to use an iPad (running iPadOS) as a wireless external display. With Apple Pencil, the device can also be used as a graphics tablet for software running on the computer. Sidecar requires a Mac with Intel Skylake CPUs and newer (such as the fourth-generation MacBook Pro), and an iPad that supports Apple Pencil.
Support for wireless game controllers
iTunes is replaced by separate Music, Podcasts, and TV apps, in line with iOS. iOS device management is now conducted via Finder. The TV app on Mac supports Dolby Atmos, Dolby Vision, and HDR10 on MacBooks released in 2018 or later, while 4K HDR playback is supported on Macs released in 2018 or later when connected to a compatible display.
Removed or changed components
macOS Catalina exclusively supports 64-bit applications. 32-bit applications no longer run (including all software that utilizes the Carbon API as well as QuickTime 7 applications, image, audio and video codecs). Apple has also removed all 32-bit-only apps from the Mac App Store.
zsh is the default login shell and interactive shell in macOS Catalina, replacing Bash, the default shell since Mac OS X Panther in 2003. Bash continues to be available in macOS Catalina, along with other shells such as csh/tcsh and ksh.
Dashboard has been removed in macOS Catalina.
The ability to add Backgrounds in Photo Booth was removed in macOS Catalina.
Built-in support for Perl, Python 2.7 and Ruby are included in macOS for compatibility with legacy software. Future versions of macOS won't include scripting language runtimes by default, and might require users to install additional packages.
|Previous release||Current release||Beta|
|Version||Build||Date||Darwin||Release Notes||Standalone download|
|10.15||19A583||October 7, 2019||19.0.0||Original Software Update release||N/A|
|19A602||October 15, 2019||Supplemental update|
|19A603||October 21, 2019||Revised Supplemental update|
|10.15.1||19B88||October 29, 2019||19.0.0
|About the macOS Catalina 10.15.1 Update||macOS 10.15.1 Update|
|10.15.2||19C57||December 10, 2019||19.2.0
|About the macOS Catalina 10.15.2 Update||macOS 10.15.2 Update|
|10.15.3 beta 1||19D49f||December 17, 2019|
- "macOS Catalina". Apple Inc.
- Juli Clover (December 10, 2019). "Apple Releases macOS Catalina 10.15.2 Update With Apple News Improvements, iPhone Remote Control Support for Music and TV Apps". MacRumors. Retrieved December 10, 2019.
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- Juli Clover (December 17, 2019). "Apple Seeds First Beta of Upcoming macOS Catalina 10.15.3 Update to Developers". MacRumors. Retrieved December 17, 2019.
- "macOS Catalina 10.15.3 beta (19D49f) - Releases - Apple Developer". Apple Developer. Apple Inc. December 17, 2019. Retrieved December 17, 2019.
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- "macOS Catalina". Apple Inc.
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- Statt, Nick (February 16, 2018). "Twitter discontinues its Mac desktop app after years of spotty support". The Verge. Retrieved June 3, 2019.
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- O'Hara, Andrew. "You can use your iPad as a second display with Sidecar in macOS Catalina". AppleInsider. Retrieved June 3, 2019.
- Cunningham, Andrew (October 7, 2019). "macOS 10.15 Catalina: The Ars Technica review". Ars Technica. Retrieved October 7, 2019.
- Peters, Jay (October 7, 2019). "You need a MacBook with a butterfly keyboard or a modern Mac desktop to use macOS Catalina's Sidecar". The Verge. Retrieved October 8, 2019.
- "Supporting New Game Controllers". Apple Developer. Retrieved July 5, 2019.
- "Apple adding support for PS4, Xbox One controllers to iOS, TVOS and MacOS". CNET. Retrieved July 5, 2019.
- "iOS 13: How to connect a PlayStation controller or Xbox game controller to your iPhone and iPad". 9to5mac. September 2019. Retrieved September 6, 2019.
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- Carman, Ashley (June 3, 2019). "Apple breaks up iTunes, creates separate Podcasts, TV, and Music apps for macOS". The Verge. Retrieved June 3, 2019.
- Roettgers, Janko (June 3, 2019). "Apple Is Officially Killing iTunes, Replacing It With Three Dedicated Media Apps". Variety. Retrieved June 3, 2019.
- Katie Conner (September 10, 2019). "235 Mac apps get the ax with Apple's next update. Here's how you find them on your rig". CNET.
- "Use zsh as the default shell on your Mac - Apple Support". Retrieved July 1, 2019.
- Landau, Ted; Frakes, Dan (December 20, 2005). Mac OS X Help Line, Tiger Edition. Peachpit Press. ISBN 9780132705240.
- Statt, Nick (June 4, 2019). "Apple will permanently remove Dashboard in macOS Catalina". The Verge. Retrieved June 5, 2019.
- "macOS 10.15 Beta Release Notes". Apple Developer. Retrieved June 6, 2019.
Scripting language runtimes such as Python, Ruby, and Perl are included in macOS for compatibility with legacy software. Future versions of macOS won’t include scripting language runtimes by default, and might require you to install additional packages.