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

iPhone 17 Pro Colors

Apple Announces iPhone 17 Pro and Pro Max With New Design, Larger Battery, and More

Tuesday September 9, 2025 10:59 am PDT by
Apple today introduced the iPhone 17 Pro and iPhone 17 Pro Max. Both devices feature a new aluminum unibody design, with the Ceramic Shield now protecting both the front and back sides. Apple says the front side is now Ceramic Shield 2, which offers 3x better scratch resistance, while the rear Ceramic Shield is advertised as 4x more resistant to cracks compared to the back glass on previous...
iPhone 17 Pro Colors

iPhone 17 and iPhone 17 Pro Models Are eSIM-Only in These Countries

Tuesday September 9, 2025 12:23 pm PDT by
Apple continues to phase out the physical SIM card tray on iPhones, with the latest models relying solely on eSIM technology in more countries. The new iPhone 17, iPhone 17 Pro, and iPhone 17 Pro Max support eSIMs only in these countries and regions, according to Apple: Bahrain Canada Guam Japan Kuwait Mexico Oman Qatar Saudi Arabia United Arab Emirates Un...
airpods translate

AirPods Live Translation Blocked for EU Users With EU Apple Accounts

Thursday September 11, 2025 4:01 am PDT by
Apple's new Live Translation feature for AirPods will be off-limits to millions of European users when it arrives next week, with strict EU regulations likely holding back its rollout. Apple says on its feature availability webpage that "Apple Intelligence: Live Translation with AirPods" won't be available if both the user is physically in the EU and their Apple Account region is in the EU....
iPhone 17 Pro Colors

iPhone 17 and iPhone 17 Pro: Release Date and Pre-Orders

Wednesday September 10, 2025 12:30 am PDT by
Apple held its annual iPhone event on Tuesday, September 9, to unveil the iPhone 17, ultra-thin iPhone Air, iPhone 17 Pro, and iPhone 17 Pro Max. All of the new iPhone models will be available to pre-order starting Friday, September 12 at 5 a.m. Pacific Time / 8 a.m. Eastern Time in the U.S. and dozens of other countries, according to Apple. The release date for the devices is one week...
iPhone 17 Pro Cosmic Orange

Skipping the iPhone 17 Pro? Here's What's Rumored for iPhone 18 Pro

Wednesday September 10, 2025 8:33 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are still a year away, there are already a few rumors about the devices that offer an early look ahead. If you are skipping the iPhone 17 Pro and want to know about what to expect from the iPhone 18 Pro models, we have recapped a few of the key rumors below. Under-Screen Face ID In April 2023, display industry analyst Ross Young shared a...
better iphone 17 lineup

Apple Lists iPhone 17, iPhone Air, and iPhone 17 Pro Battery Capacities

Tuesday September 9, 2025 1:25 pm PDT by
Apple has confirmed the battery capacities for the iPhone 17, iPhone Air, iPhone 17 Pro, and iPhone 17 Pro Max models that were announced earlier today. Apple is required to publish energy labels on its iPhone product pages in the EU, and they reveal the official mAh battery capacities for the devices. Here are the battery capacities for each model, according to Apple: iPhone 17:...
iPhone 17 Pro and Air A19 Pro Feature

iPhone 17 Pro and iPhone Air Benchmarks Reveal Speed of A19 Pro Chip

Wednesday September 10, 2025 7:33 am PDT by
The first benchmark results for the A19 Pro chip in the iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air surfaced in the Geekbench 6 database today. Based on these early results — which are unconfirmed — the A19 Pro chip across the Pro models and the iPhone Air appears to deliver up to 13% to 15% faster multi-core CPU performance compared to the A18 Pro chip in the iPhone 16 Pro...

Top Rated Comments

Lounge vibes 05 Avatar
78 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
78 months ago
Where's 10.15.1 beta 1? This is unacceptable.
Score: 20 Votes (Like | Disagree)
norm2816 Avatar
78 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
78 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
78 months ago

I don't think any OS can compare to that disaster :rolleyes:
Windows ME!!
Score: 12 Votes (Like | Disagree)
schlitzz Avatar
78 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)