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
80 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
80 months ago
Figures, Catalina is nowhere near ready for a public release.
Score: 6 Votes (Like | Disagree)
thecastle Avatar
thecastle
80 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
80 months ago
I think we will have another event in October and Catalina will launch then.
Score: 4 Votes (Like | Disagree)
puckhead193 Avatar
puckhead193
80 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
80 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 Feature

iOS 26.1 to iOS 26.4 Will Add These New Features to Your iPhone

Saturday October 18, 2025 11:00 am PDT by
iOS 26 was released last month, but the software train never stops, and iOS 26.1 beta testing is already underway. So far, iOS 26.1 makes both Apple Intelligence and Live Translation on compatible AirPods available in additional languages, and it includes some other minor changes across the Apple Music, Calendar, Photos, Clock, and Safari apps. More features and changes will follow in future ...
Read Full Article • 110 comments
ios 26 1 liquid glass opaque

iOS 26.1 Beta 4 Lets Users Control Liquid Glass Transparency with New Toggle

Monday October 20, 2025 10:57 am PDT by
With the fourth betas of iOS 26.1, iPadOS 26.1, and macOS 26.1, Apple has introduced a new setting that's designed to allow users to customize the look of Liquid Glass. The toggle lets users select from a clear look for Liquid Glass, or a tinted look. Clear is the current Liquid Glass design, which is more transparent and shows the background underneath buttons, bars, and menus, while tinted ...
Read Full Article • 207 comments
iPhone Siri Glow

Some Apple Employees Have 'Concerns' About iOS 26.4's Revamped Siri

Sunday October 19, 2025 7:39 am PDT by
iOS 26.4 is expected to introduce a revamped version of Siri powered by Apple Intelligence, but not everyone is satisfied with how well it works. In his Power On newsletter today, Bloomberg's Mark Gurman said some of Apple's software engineers have "concerns" about the overhauled Siri's performance. However, he did not provide any specific details about the shortcomings. iOS 26.4 will...
Read Full Article • 353 comments
iOS 26

iOS 26.0.2 Update for iPhones Coming Soon

Friday October 17, 2025 7:35 am PDT by
Apple's software engineers continue to internally test iOS 26.0.2, according to MacRumors logs, which have been a reliable indicator of upcoming iOS versions. iOS 26.0.2 will be a minor update that addresses bugs and/or security vulnerabilities, but we do not know any specific details yet. The update will likely be released by the end of next week. Last month, Apple released iOS 26.0.1,...
Read Full Article • 50 comments
Apple iPad Pro hero M5

New iPad Pro Has Six Key Upgrades Beyond M5 Chip

Saturday October 18, 2025 10:57 am PDT by
While the new iPad Pro's headline feature is the M5 chip, the device has some other changes, including N1 and C1X chips, faster storage speeds, and more. With the M5 chip, the new iPad Pro has up to a 20% faster CPU and up to a 40% faster GPU compared to the previous model with the M4 chip, according to Geekbench 6 results. Keep in mind that 256GB and 512GB configurations have a 9-core CPU,...
Read Full Article • 100 comments
maxresdefault

Here's How the iOS 26.1 Transparency Toggle Changes Liquid Glass

Monday October 20, 2025 1:55 pm PDT by
With the fourth beta of iOS 26.1, Apple added a toggle that makes Liquid Glass more opaque and reduces transparency. We tested the beta to see where the toggle works and what it looks like. Subscribe to the MacRumors YouTube channel for more videos. If you have the latest iOS 26.1 beta, you can go to Settings > Display and Brightness to get to the new option. Tap on Liquid Glass, then...
Read Full Article • 156 comments
iPhone Air

Report: 'Virtually No Demand' for iPhone Air

Wednesday October 22, 2025 3:22 am PDT by
Apple is "drastically" cutting production of the iPhone Air and shifting focus toward the iPhone 17 and iPhone 17 Pro models, Nikkei Asia reports. The business publication claims to have learned of a major cut to iPhone Air production motivated by weaker-than-expected consumer interest, nearly to "end of production levels." Despite early reports of the iPhone Air selling out within hours of...
Read Full Article • 360 comments
iOS 26

What's New in iOS 26.1 Beta 4

Monday October 20, 2025 1:02 pm PDT by
Even though we're at the fourth beta of iOS 26.1, Apple is continuing to add new features. In fact, the fourth beta has some of the biggest changes that we'll get when iOS 26.1 releases to the public later this month. We've rounded up what's new below. Liquid Glass Transparency Toggle Apple added a toggle for customizing the look of Liquid Glass. In Settings > Display and Brightness,...
Read Full Article • 35 comments