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

Apple Logo Zoomed

Tim Cook Teases Plans for Apple's Upcoming 50th Anniversary

Thursday February 5, 2026 12:54 pm PST by
Apple turns 50 this year, and its CEO Tim Cook has promised to celebrate the milestone. The big day falls on April 1, 2026. "I've been unusually reflective lately about Apple because we have been working on what do we do to mark this moment," Cook told employees today, according to Bloomberg's Mark Gurman. "When you really stop and pause and think about the last 50 years, it makes your heart ...
wwdc sans text feature

Apple Rumored to Announce New Product on February 19

Thursday February 5, 2026 12:22 pm PST by
Apple plans to announce the iPhone 17e on Thursday, February 19, according to Macwelt, the German equivalent of Macworld. The report, citing industry sources, is available in English on Macworld. Apple announced the iPhone 16e on Wednesday, February 19 last year, so the iPhone 17e would be unveiled exactly one year later if this rumor is accurate. It is quite uncommon for Apple to unveil...
Finder Siri Feature

Why Apple's iOS 26.4 Siri Upgrade Will Be Bigger Than Originally Promised

Friday February 6, 2026 3:06 pm PST by
In the iOS 26.4 update that's coming this spring, Apple will introduce a new version of Siri that's going to overhaul how we interact with the personal assistant and what it's able to do. The iOS 26.4 version of Siri won't work like ChatGPT or Claude, but it will rely on large language models (LLMs) and has been updated from the ground up. Upgraded Architecture The next-generation...
iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
While the iOS 26.3 Release Candidate is now available ahead of a public release, the first iOS 26.4 beta is likely still at least a week away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
iphone 17 pro dark blue 1

iPhone 18 Pro Max Rumored to Deliver Next-Level Battery Life

Friday February 6, 2026 5:14 am PST by
The iPhone 18 Pro Max will feature a bigger battery for continued best-in-class battery life, according to a known Weibo leaker. Citing supply chain information, the Weibo user known as "Digital Chat Station" said that the iPhone 18 Pro Max will have a battery capacity of 5,100 to 5,200 mAh. Combined with the efficiency improvements of the A20 Pro chip, made with TSMC's 2nm process, the...

Top Rated Comments

Cyberpower678 Avatar
87 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
87 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
87 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
87 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
87 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
87 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)