Apple Seeds macOS Catalina Golden Master to Developers

Apple today seeded the golden master version of macOS 10.15 Catalina to developers, three days after seeding the tenth macOS Catalina beta and over three months after the new Mac operating system update was first unveiled at the Worldwide Developers Conference.

The golden master version of macOS Catalina represents the final version of the update that will be provided to the public at release. The new macOS Catalina software can be downloaded using the Software Update mechanism in System Preferences after installing the proper profile from the Developer Center.

test macOS 10
macOS Catalina eliminates the iTunes app, splitting it into Music, Podcasts, and TV apps. The three new apps offer similar functionality to iTunes, but are split up by feature. iOS device management is still available on the Mac, but it's now done through the Finder rather than iTunes.

With a new Sidecar feature, you can turn your iPad into a second display for your Mac with just the click of a button. The Apple Pencil works with ‌Sidecar‌, so you can turn your ‌iPad‌ into a drawing tablet in apps like Photoshop and Illustrator.

Your Apple Watch can be used to approve security prompts for passwords and other info in macOS Catalina, and Macs with a T2 chip now support Activation Lock, making them more secure. There's a new Find My that brings the ‌Find My‌ Mac app to the Mac for the first time and even lets you track your devices when they're offline, or, in the case of notebooks, closed.

Screen Time is available on the Mac as well as iOS devices, and Project Catalyst, a new Apple initiative, will let developers easily port their ‌iPad‌ apps over to the Mac to increase the number of Mac apps available.

There's a new Photos interface that surfaces your best photos organized by day, month, or year, there's a new start page in Safari, Mail has new tools for muting email threads and blocking senders, and the Reminders app has been overhauled.

32-bit apps no longer work in macOS Catalina, which is something to be aware of before installing the beta.

For more details on macOS Catalina, make sure to check out our macOS Catalina roundup. Apple is planning to release macOS Catalina sometime in October.

Popular Stories

iOS 18

Apple Releases iOS 18.5 With New Wallpaper, Screen Time Changes, Carrier Satellite Support for iPhone 13 and More

Monday May 12, 2025 10:06 am PDT by
Apple today released iOS 18.5 and iPadOS 18.5, the fifth updates to the iOS 18 and iPadOS 18 operating systems that came out last September. iOS 18.5 and iPadOS 18.5 come a little over a month after Apple released iOS 18.4 and iPadOS 18.4. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. The iOS 18.5 update has a...
tvOS 18 Feature

Apple Releases tvOS 18.5

Monday May 12, 2025 10:01 am PDT by
Apple today released tvOS 18.5, the latest version of the tvOS operating system. tvOS 18.5 comes a little over a month after the launch of tvOS 18.4, and it is available for the Apple TV 4K and Apple TV HD models. tvOS 18.5 can be downloaded using the Settings app on the ‌Apple TV‌. Open up Settings and go to System > Software Update to get the new software. ‌Apple TV‌ owners who have...
iPhone 17 Pro Blue Feature Tighter Crop

WSJ: Apple Weighing Price Hikes for iPhone 17 Lineup Without Blaming Tariffs

Monday May 12, 2025 3:36 am PDT by
Apple is considering raising prices for its upcoming iPhone 17 models set to release this fall, according to people familiar with the matter cited by The Wall Street Journal. The company reportedly aims to pair the potential price hikes with new features and design changes to justify the increased cost to consumers, rather than attributing them to U.S. tariffs on goods from China. The...
iOS 18

iOS 18.5 Expected This Week With These New Features

Monday May 12, 2025 7:20 am PDT by
Following more than a month of beta testing, Apple is expected to release iOS 18.5 to the general public this week. While the software update is relatively minor, it still includes a handful of new features and changes for iPhones. Below, we recap everything new in iOS 18.5. Pride Wallpaper Apple recently announced its 2025 Pride Collection, including a new Apple Watch band, watch face,...
macOS Sequoia Feature

Apple Releases macOS Sequoia 15.5

Monday May 12, 2025 10:10 am PDT by
Apple today released macOS Sequoia 15.5, the fifth major update to the macOS Sequoia operating system that launched last September. macOS Sequoia 15.5 comes a little over a month after the launch of macOS Sequoia 15.4. Mac users can download the ‌‌‌macOS Sequoia 15.5‌‌‌ update through the Software Update section of System Settings. It is available for free on all Macs able to run ...
Mayday Calendar

Apple Acquisition Hints at Upgraded Calendar App on iOS 19 or Beyond

Friday May 9, 2025 9:13 am PDT by
Apple acquired Canadian startup Mayday Labs in April 2024, according to a European Commission listing, spotted by French blog MacGeneration. The acquisition had not received widespread attention from tech publications until now. Apple is legally required to report certain acquisitions to the European Commission, under the terms of the EU's Digital Markets Act. Mayday Labs founder Jeremy...
Beyond iPhone 13 Better Triad

20th Anniversary iPhone Will Be Mostly Glass With All-Screen Design

Monday May 12, 2025 2:52 am PDT by
Apple will mark the 10th anniversary of the iPhone X in 2027 by launching a mostly glass, curved iPhone without any cutouts in the display, according to Bloomberg's Mark Gurman. Writing in his latest Power On newsletter, Gurman said the all-screen device will arrive later in 2027, suggesting a fall release. The model will be preceded by Apple's first foldable iPhone, claims the reporter....

Top Rated Comments

Lounge vibes 05 Avatar
73 months ago

This may well be at least that bad. Apple is intentionally breaking software that millions of people rely on.

Dropping 32 bit support is inexcusable. I'm anticipating my phone ringing off the hook in the weeks after release with people needing me to remove 10.15 and reinstall 10.14.

I'm disabling automatic macOS updates on every machine I touch. Almost nobody in the real world is ready for this.

And what's worse, I've got it running on a test machine, have had it for months now. It doesn't add anything useful. Other than broken software and the inexplicable System Preferences rearrange, it's almost indistinguishable from 10.14.
Oh, so you're one of those people.
You probably said the same thing when Mac OS X Lion dropped Power PC apps. The real world isn't ready for it. Well, if they are not ready now, they will be soon. Apple Has been moving to 64 bit for the last 14 years. I am surprised its taken them this long. They probably have been thinking about dropping 32 bit apps since Yosemite. Just be happy those apps were supported for this long, and move on.
Every year we get people like you, especially when there is a big change. People who stood by Mac OS X Tiger, and said that Leopard would never replace it.
Same with Snow Leopard, and Mavericks. But the world has moved on
People will move on from Mojave and 32 bit apps eventually.
Just you wait when Apple moves away from Intel CPUs. You will be all up in arms.

FYI, there are plenty of changes, including the split up of iTunes without removing any features, the ability to use an iPad as a display, and several others.
Just because the interface is extremely similar to Mojave does not mean that it is the same.
Score: 27 Votes (Like | Disagree)
dogslobber Avatar
73 months ago
Where's 10.15.1 beta 1? This is unacceptable.
Score: 20 Votes (Like | Disagree)
norm2816 Avatar
73 months ago

just turned up, Apples version of Windows Vista
I don't think any OS can compare to that disaster :rolleyes:
Score: 17 Votes (Like | Disagree)
Nütztjanix Avatar
73 months ago

[…]
Dropping 32 bit support is inexcusable.
[…]
Come on - Apple started the transition to 64 Bit in 2005 with Mac OS X 10.4 Tiger. That was 14 years ago - I'd say any developer who had only the slightest intention to keep his code up to date had plenty of time to do so …
Score: 16 Votes (Like | Disagree)
Chris The Bipolarbear Avatar
73 months ago

I don't think any OS can compare to that disaster :rolleyes:
Windows ME!!
Score: 12 Votes (Like | Disagree)
schlitzz Avatar
73 months ago

Anyone know if the GM build now fixes the white screen when booting up through the EGPU?
GM build quality sucks. Just look at the crappy chrome SUV door handles.
Score: 11 Votes (Like | Disagree)