Apple's latest Mac operating system, macOS Catalina, will see a launch sometime in October, the company announced today following its iPhone-centric event.

While iOS 13 and watchOS 6 will launch on Thursday, September 19, macOS Catalina will not be coming out at the same time.

test macOS 10
Apple has not provided details on when specifically macOS Catalina will launch in October, so it could come at any time during the month.

Apple has in the past staggered the releases of its new software updates, so it's not too much of a surprise to see macOS Catalina launching at a later date.

If Apple holds an October event that sees the launch of new Macs, such as the rumored 16-inch MacBook Pro, macOS Catalina could be timed with the release of the new machines.

Tag: September 2019 Event
Related Forum: macOS Catalina

Top Rated Comments

jens.tijtgat Avatar
jens.tijtgat
81 months ago
I hope Apple support is prepared for all the customers 'upgrading' their reminders app and have it stop syncing with their Mac..
Score: 6 Votes (Like | Disagree)
TheSkywalker77 Avatar
TheSkywalker77
81 months ago
Figures, Catalina is nowhere near ready for a public release.
Score: 6 Votes (Like | Disagree)
thecastle Avatar
thecastle
81 months ago
Good. Catalina betas right now are way too buggy, let the engineers take some more weeks to address the issues instead of rushing a release.
Score: 5 Votes (Like | Disagree)
Lozza013 Avatar
Lozza013
81 months ago
I think we will have another event in October and Catalina will launch then.
Score: 4 Votes (Like | Disagree)
puckhead193 Avatar
puckhead193
81 months ago
I think we will have another event in October and Catalina will launch then.
along with new mac pro and hopefully 16" MBP!!!
Score: 4 Votes (Like | Disagree)
theluggage Avatar
theluggage
81 months ago
I think we will have another event in October and Catalina will launch then.
So mac event confirmed for October for 16" MBP, mac pro XDR display release date and more
so no modular Mac Pro release in September then, the website leak was wrong
I don't recall Apple having "release" events for OS releases after "launching" them at WWDC in the past.

Nor do they need Catalina to be released before they release the Mac Pro - just needs a point release of Mojave with any new drivers. Especially in the case of a "serious callers only" product like the MP: anybody with a serious pays-the-rent income stream that depends on their Mac who switches to a new OS on day one is... courageous. Plenty of applications aren't going to support Catalina on day one.
Score: 3 Votes (Like | Disagree)
Read All Comments

Popular Stories

iOS 26

When Will Apple Release iOS 26.2?

Monday December 1, 2025 4:37 pm PST by
We're getting closer to the launch of the final major iOS update of the year, with Apple set to release iOS 26.2 in December. We've had three betas so far and are expecting a fourth beta or a release candidate this week, so a launch could follow as soon as next week. Past Launch Dates Apple's past iOS x.2 updates from the last few years have all happened right around the middle of the...
Read Full Article • 25 comments
maxresdefault

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Monday December 1, 2025 3:00 am PST by
Apple is expected to launch a new foldable iPhone next year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that 2026 could indeed be the year that Apple releases its first foldable device. Subscribe to the MacRumors YouTube channel for more videos. Below, we've collated an updated set of key details that ...
Read Full Article • 49 comments
ios 18 to ios 26 upgrade

Apple Pushes iPhone Users Still on iOS 18 to Upgrade to iOS 26

Tuesday December 2, 2025 11:09 am PST by
Apple is encouraging iPhone users who are still running iOS 18 to upgrade to iOS 26 by making the iOS 26 software upgrade option more prominent. Since iOS 26 launched in September, it has been displayed as an optional upgrade at the bottom of the Software Update interface in the Settings app. iOS 18 has been the default operating system option, and users running iOS 18 have seen iOS 18...
Read Full Article • 265 comments
Sad Siri Feature

Apple AI Chief John Giannandrea Retiring After Siri Delays

Monday December 1, 2025 2:16 pm PST by
Apple AI chief John Giannandrea is stepping down from his position and retiring in spring 2026, Apple announced today. Giannandrea will serve as an advisor between now and 2026, with former Microsoft AI researcher Amar Subramanya set to take over as vice president of AI. Subramanya will report to Apple engineering chief Craig Federighi, and will lead Apple Foundation Models, ML research, and ...
Read Full Article • 99 comments
Netflix Smaller 4

Netflix Kills Casting From Its Mobile App to Most Modern TVs

Monday December 1, 2025 4:36 am PST by
Netflix has quietly removed the ability to cast content from its mobile apps to most modern TVs and streaming devices, including newer Chromecast models and the Google TV Streamer. The change was first spotted by users on Reddit and confirmed in an updated Netflix support page (via Android Authority), which now states that the streaming service no longer supports casting from mobile devices...
Read Full Article • 111 comments
Touchscreen MacBook Feature

Here Are the Four MacBooks Apple Is Expected to Launch Next Year

Monday December 1, 2025 5:00 am PST by
2026 could be a bumper year for Apple's Mac lineup, with the company expected to announce as many as four separate MacBook launches. Rumors suggest Apple will court both ends of the consumer spectrum, with more affordable options for students and feature-rich premium lines for users that seek the highest specifications from a laptop. Below is a breakdown of what we're expecting over the next ...
Read Full Article • 57 comments
iphone 17 cyber

iPhone 17 Demand Is Breaking Apple's Sales Records

Tuesday December 2, 2025 9:44 am PST by
Apple's iPhone 17 lineup is selling well enough that Apple is on track to ship more than 247.4 million total iPhones in 2025, according to a new report from IDC. Total 2025 shipments are forecast to grow 6.1 percent year over year due to iPhone 17 demand and increased sales in China, a major market for Apple. Overall worldwide smartphone shipments across Android and iOS are forecast to...
Read Full Article • 128 comments
Cyber Week Deals 2025

Best Cyber Week Apple Deals Include Big Discounts on AirPods, Apple Watch, and More

Sunday November 30, 2025 7:33 am PST by
Cyber Week is here, and you can find popular Apple products like AirPods, iPad, Apple Watch, and more at all-time low prices. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. Specifically,...
Read Full Article • 13 comments
iOS 26

What to Expect From Apple This December: iOS 26.3 Beta, Replay 2025, and More

Monday December 1, 2025 8:40 am PST by
The calendar has turned to December, and the quieter year-end holiday season is now upon us. Nevertheless, we can still expect a few things from Apple this month. Apple previously announced that iOS 26.2 will be released to the general public in December, and we can expect corresponding updates to be released as well, including iPadOS 26.2, macOS 26.2, watchOS 26.2, tvOS 26.2, and visionOS...
Read Full Article • 17 comments
iOS 26

Apple Seeds iOS 26.2 and iPadOS 26.2 Release Candidates to Developers and Public Beta Testers

Wednesday December 3, 2025 10:33 am PST by
Apple today seeded the release candidate versions of upcoming iOS 26.2 and iPadOS 26.2 updates to developers and public beta testers, with the software coming two weeks after Apple seeded the third betas. The release candidates represent the final versions of iOS 26.2 and iPadOS 26.2 that will be provided to the public if no further bugs are found during this final week of testing....
Read Full Article • 36 comments