Apple Seeds Second Beta of macOS Catalina to Developers

Apple today seeded the second beta of macOS 10.15 Catalina for testing purposes, two weeks after the new Mac operating system update was first unveiled at the Worldwide Developers Conference.

The new macOS Catalina beta can be downloaded using the Software Update mechanism in System Preferences. As with all new betas, you're not going to want to install macOS Catalina on a primary machine as it is early release software and could have major bugs.

test macOS 10
macOS Catalina eliminates the iTunes app, splitting it into Music, Podcasts, and TV apps. The Apple Music and Apple Podcasts apps are available now, while the Apple TV app is coming later this year.

The new apps are similar in function to iTunes, but are split up by feature. iOS device management is still available on the Mac, but it's now done through 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 in macOS Catalina, and Macs with a T2 chip support Activation Lock. 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.

Screen Time is now 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.

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. Right now, Catalina is limited to developers, but Apple plans to release a public beta in July ahead of a fall public launch.

For more details on macOS Catalina, make sure to check out our macOS Catalina roundup.

Related Forum: macOS Catalina

Popular Stories

iOS 26 Battery Glass Feature

iOS 26.1 Beta Liquid Glass Battery Drain Test: Tinted vs Clear Mode

Friday October 24, 2025 2:30 pm PDT by
In the fourth iOS 26.1 beta, Apple added a "Tinted" option that reduces the translucency of Liquid Glass for those who prefer a more opaque look. I saw some comments wondering whether the setting might preserve battery life, so I thought I'd do some testing. Test Settings I did four separate tests using the iPhone 17 Pro Max, and I kept the parameters as similar as possible. Here are the...
iOS 26

iOS 26.1 Coming Soon With These 8 New Features for Your iPhone

Wednesday October 22, 2025 6:15 am PDT by
The upcoming iOS 26.1 update includes a handful of new features and changes for iPhones, including a toggle for changing the appearance of the Liquid Glass design, "slide to stop" for alarms in the Clock app, and more. iOS 26.1 is currently in beta testing. The update will likely be released in the first half of November, and it is compatible with the iPhone 11 series and newer, but some...
iOS 26 Maps Glass

Apple Reportedly Moving Ahead With Ads in Maps App

Sunday October 26, 2025 6:22 am PDT by
Apple Maps could feature integrated ads as soon as next year, Bloomberg's Mark Gurman reports. In his latest "Power On" newsletter, Gurman said that Apple's plan to bring more ads to iOS is moving "gaining traction," with the Maps app being next in line. The project will apparently give restaurants and other businesses the option to pay to have their details featured more prominently in...
Emergency SOS via Satellite iPhone YT

iPhone 18 Pro Rumored to Support Full 5G Satellite Internet

Friday October 24, 2025 7:18 am PDT by
At least some new iPhone models launching next year may support full 5G satellite internet, according to a report this week from The Information. "Apple plans to add support in upcoming iPhones as early as next year for 5G networks that aren't tethered to Earth's surface, which includes satellites," the report said. "That would give the iPhone full internet access over satellite," it added. ...
trump white house ballroom

Apple Donating to Trump's $350M White House Ballroom Project

Thursday October 23, 2025 3:55 pm PDT by
Apple is one of several tech companies that will contribute to the construction of U.S. President Donald Trump's 90,000-square-foot ballroom, reports CNN. Construction began on the ballroom this week, and the White House's east wing was torn down. Trump claims that the ballroom will cost $350 million, and that it will be privately funded through donations. The cost has already increased $150 ...
iPhone 17 Colors

iPhone 18 Rumored to Feature 50% More RAM

Saturday October 25, 2025 2:57 am PDT by
Apple's upcoming iPhone 18 could feature 50% more memory than its predecessor, according to Korea's The Bell. With its latest iPhone lineup, the iPhone Air, iPhone 17 Pro, and iPhone 17 Pro Max feature 12GB of memory. This is a significant increase of 4GB more their predecessors, largely driven by the demands of on-device artificial intelligence processing. The iPhone 17 is the only new...
All Screen iPhone 2027 Feature 1

Report: Apple to Skip 'iPhone 19' Name for 'iPhone 20'

Thursday October 23, 2025 4:28 am PDT by
Apple's new iPhone lineup launched in the fall of 2027 will be called the "iPhone 20" models, rather than the "iPhone 19," according to research firm Omdia. Speaking at a conference in Seoul (via ETNews), Omdia Chief Researcher Heo Moo-yeol corroborated rumors that Apple plans to move the launch of its standard iPhone to the first half of the year and provided some additional clarity about...
iOS 26

iOS 26.1 Coming Soon: New Features for Your iPhone and Release Date

Monday October 27, 2025 7:55 am PDT by
The upcoming iOS 26.1 update includes a handful of new features and changes for iPhones, including a toggle for changing the appearance of the Liquid Glass design, "slide to stop" for alarms in the Clock app, and more. Below, we outline key details about iOS 26.1. Release Date Given that Apple has yet to seed an iOS 26.1 Release Candidate, which is typically the final beta version, the...
iOS 26 Feature

iOS 26 Leaker Being Sued by Apple is Actually a 'Lifelong Apple Fanboy'

Friday October 24, 2025 9:20 am PDT by
In July, Apple sued well-known YouTuber Jon Prosser and his acquaintance Michael Ramacciotti over alleged theft of the company's trade secrets, after Prosser leaked some iOS 26 details in videos uploaded to his YouTube channel Front Page Tech. If you are not caught up on the lawsuit, read our initial coverage to learn more. Earlier this week, Prosser told The Verge he has "been in active...

Top Rated Comments

Cyberpower678 Avatar
83 months ago
Finder is a bit slow and finicky, unlike Beta 1. I found Home Sharing and enabled it but I cannot connect to my film and TV libraries through the Apple TV app on the phone (running iOS 13) or the Apple TV, running 12.3. I made sure I was logged into iCloud and that Home Sharing was enabled. On the phone I get "There was a problem playing this content" and on the TV, the library comes up but the error message is, "Cannot connect to shared libraries." My shared music library plays, however.

I know I can't get that excited about these issues running a Beta but if anyone else got this working, let me know. Thanks!
Turn your iCloud off and back on. That might fix your issues.
[doublepost=1560875145][/doublepost]
I will never understand why every new OS results in the wholesale breaking of things that were working just fine prior. How is this progress? Seems more like a study in user aggravation.
Spoken like a non-developer. ;). When major changes are made and core sub-routines updates to improve efficiency, it can introduce breakages in places that aren’t immediately expected to break in. MacOS is large and sometime a core routine needs to be altered to implement the new features being introduced. Otherwise macOS would be just one big patch job. We might as well be using Windows at that point.
Score: 4 Votes (Like | Disagree)
Chris Grande Avatar
83 months ago
I'd like to see them bring back home sharing - at least by the final build.
It's in there, it's just been moved to System Preferences -> Sharing -> Media Sharing.
Score: 4 Votes (Like | Disagree)
DesertNomad Avatar
83 months ago
I wish they'd fix NSPredicateEditor when it is displayed in a sheet. It has been broken since at least the initial release of 10.14. I guess they are more interested in designing new emojis rather than fixing core parts of the OS.

I've been developing software for the Apple/Mac platform since 1985 and it's sad to see the state of Apple today. Lots of broken parts of the OS will likely never be fixed.
Score: 3 Votes (Like | Disagree)
cponto Avatar
83 months ago
I'd like to see them bring back home sharing - at least by the final build.
Home Sharing works well with Catalina Beta 1

Attachment Image
Score: 3 Votes (Like | Disagree)
zorinlynx Avatar
83 months ago
Time Machine supporting APFS disks?
I don't know why this isn't a thing yet. APFS supports snapshot streams and incremental snapshot streams. This would be absolutely ideal for Time Machine and probably hundreds of times faster than the current way which is basically an rsync with hard linked directories.
Score: 3 Votes (Like | Disagree)
Chris The Bipolarbear Avatar
83 months ago
6.45 GB - about 3 hours remaining. Yeah, I figured Beta 2 would be popular...
it a complete new installer even has a pretty picture on it

Attachment Image
Score: 3 Votes (Like | Disagree)