Apple today seeded the third beta of an upcoming macOS Catalina update to its public beta testing group, two weeks after seeding the second public beta and a day after seeding the fourth developer beta.

Beta testers who have signed up for Apple's beta testing program will be able to download the macOS Catalina beta through the Software Update mechanism in System Preferences after installing the proper profile. Those who want to be a part of Apple's beta testing program can sign up to participate through the beta testing website, which gives users access to iOS, macOS, and tvOS betas.

test macOS 10
Potential beta testers should make a full Time Machine backup before installing macOS Catalina, and it may not be wise to install it on a primary machine because betas can be unstable and often have many bugs.

macOS Catalina eliminates the iTunes app, which has been a key Mac feature since 2001. In Catalina, iTunes has been replaced by Music, Podcasts, and TV apps. The new apps can do everything that iTunes can do, so Mac users aren't going to be losing any functionality, and device management capabilities are now handled by the Finder app.

macOS Catalina has a useful new Sidecar feature, designed to turn the iPad into a secondary display for the Mac. It can work as a traditional second display or with a mirroring feature. Apple Pencil support works with ‌Sidecar‌, so you can turn your ‌iPad‌ into a drawing tablet using apps like Photoshop.

sidecarmacoscatalina
For those with an Apple Watch set up to unlock the Mac, there's now an option to approve security prompts in Catalina by tapping on the side button of the watch. Macs with a T2 chip in them also support Activation Lock, making them useless to thieves much as it does on the iPhone.

There's a new Find My app that lets you track your lost devices, and previously, this functionality was only available via iCloud on the Mac. There's even a new option to find your devices even when they're offline by leveraging Bluetooth connections to other nearby devices, something that's particularly handy on the Mac because it doesn't have a cellular connection.

findmy
Apple is expanding Screen Time to the Mac in Catalina, letting Apple users track their device usage across Mac, iOS, and ‌iPad‌ for a better overall picture of time spent using electronics.

For developers, a "Project Catalyst" feature lets apps designed for the ‌iPad‌ be ported over to the Mac with just a few clicks in Xcode and some minor tweaks. Apple's ultimate goal with Project Catalyst is to bring more apps to the Mac.

Photos features an updated interface that better highlights your best pictures, Safari includes a new start page with Siri Suggestions, Mail has a new feature for blocking emails and another new option for muting threads, and the Reminders app has been overhauled and is now more useful.

macoscatalinaphotos
Before installing macOS Catalina, be aware that it does away with 32-bit app support, so some older apps that have not been updated in some time may stop working. For more on macOS Catalina, make sure to check out our macOS Catalina roundup.

Related Forum: macOS Catalina

Top Rated Comments

cmChimera Avatar
84 months ago
This came out two days ago.
Score: 6 Votes (Like | Disagree)
Kaibelf Avatar
84 months ago
I cannot believe they have seeded this as a public beta. No one should touch this with a 50 foot pole.
It is the most garbage beta ever seeded for macOS.
based on what exactly? Certainly this hyperbole comes with some citations?
Score: 6 Votes (Like | Disagree)
Stevez67 Avatar
84 months ago
I cannot believe they have seeded this as a public beta. No one should touch this with a 50 foot pole.
It is the most garbage beta ever seeded for macOS.
Of course YMMV, but it's working really well on my MacBook Pro. A few wrinkles here and there, but it has steadily improved with each release.
Score: 5 Votes (Like | Disagree)
Shirasaki Avatar
84 months ago
I cannot believe they have seeded this as a public beta. No one should touch this with a 50 foot pole.
It is the most garbage beta ever seeded for macOS.
While I tend to agree this to an extent, I think you are a bit too emotional regarding Catalina beta.
With that being said, I do want people having no idea what to expect from using beta stay away from Catalina beta entirely, or even 6 months after its debut to the public. This version changes a ton of stuff and 64-bit only is the major dealbreaker for tons of people.
Score: 3 Votes (Like | Disagree)
WestCoastCommodore Avatar
84 months ago
This came out two days ago.
This is what I wanted to check. I saw the PB get pushed out the same day as the Dev Beta, so no update is showing now.
Score: 2 Votes (Like | Disagree)
mixel Avatar
84 months ago
I have a late 2018 MB Air. Nope. Sorry. I'd put real money on folks not following installation instructions. I wiped and reinstalled HS, and installed last week. Runs fine, even with Chrome, and M$ Office. Too easy.
How do you “not follow installation instructions” on an updater? It’s supposed to update it. Not take days.

It didn’t say to reformat. I’m happy to help test this stuff, but it’s not user error treating the software in the exact way it’s meant to be used.
Score: 2 Votes (Like | Disagree)

Popular Stories

iOS 26

iOS 26.2 Coming Soon With These 8 New Features on Your iPhone

Thursday December 11, 2025 8:49 am PST by
Apple seeded the second iOS 26.2 Release Candidate to developers earlier this week, meaning the update will be released to the general public very soon. Apple confirmed iOS 26.2 would be released in December, but it did not provide a specific date. We expect the update to be released by early next week. iOS 26.2 includes a handful of new features and changes on the iPhone, such as a new...
Google maps feaure

Google Maps Quietly Added This Long-Overdue Feature for Drivers

Wednesday December 10, 2025 2:52 am PST by
Google Maps on iOS quietly gained a new feature recently that automatically recognizes where you've parked your vehicle and saves the location for you. Announced on LinkedIn by Rio Akasaka, Google Maps' senior product manager, the new feature auto-detects your parked location even if you don't use the parking pin function, saves it for up to 48 hours, and then automatically removes it once...
Foldable iPhone 2023 Feature 1

Apple to Make More Foldable iPhones Than Expected [Updated]

Tuesday December 9, 2025 9:59 am PST by
Apple has ordered 22 million OLED panels from Samsung Display for the first foldable iPhone, signaling a significantly larger production target than the display industry had previously anticipated, ET News reports. In the now-seemingly deleted report, ET News claimed that Samsung plans to mass-produce 11 million inward-folding OLED displays for Apple next year, as well as 11 million...
iOS 26

15 New Things Your iPhone Can Do in iOS 26.2

Friday December 5, 2025 9:40 am PST by
Apple is about to release iOS 26.2, the second major point update for iPhones since iOS 26 was rolled out in September, and there are at least 15 notable changes and improvements worth checking out. We've rounded them up below. Apple is expected to roll out iOS 26.2 to compatible devices sometime between December 8 and December 16. When the update drops, you can check Apple's servers for the ...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2 and AirPods Pro 3

Thursday December 11, 2025 11:28 am PST by
Apple today released new firmware designed for the AirPods Pro 3 and the prior-generation AirPods Pro 2. The AirPods Pro 3 firmware is 8B30, up from 8B25, while the AirPods Pro 2 firmware is 8B28, up from 8B21. There's no word on what's include in the updated firmware, but the AirPods Pro 2 and AirPods Pro 3 are getting expanded support for Live Translation in the European Union in iOS...
iOS 26

Apple Seeds Second iOS 26.2 Release Candidate to Developers and Public Beta Testers

Monday December 8, 2025 10:18 am PST by
Apple today seeded the second release candidate version of iOS 26.2 to developers and public beta testers, with the software coming one week after Apple seeded the first RC. The release candidate represents the final version iOS 26.2 that will be provided to the public if no further bugs are found. Registered developers and public beta testers can download the betas from the Settings app on...
AirTag 2 Mock Feature

Apple AirTag 2: Four New Features Found in iOS 26 Code

Thursday December 11, 2025 10:31 am PST by
The AirTag 2 will include a handful of new features that will improve tracking capabilities, according to a new report from Macworld. The site says that it was able to access an internal build of iOS 26, which includes references to multiple unreleased products. Here's what's supposedly coming: An improved pairing process, though no details were provided. AirTag pairing is already...
iPhone 14 Pro Dynamic Island

iPhone 18 Pro Leak Adds New Evidence for Under-Display Face ID

Monday December 8, 2025 4:54 am PST by
Apple is actively testing under-screen Face ID for next year's iPhone 18 Pro models using a special "spliced micro-transparent glass" window built into the display, claims a Chinese leaker. According to "Smart Pikachu," a Weibo account that has previously shared accurate supply-chain details on Chinese Android hardware, Apple is testing the special glass as a way to let the TrueDepth...
ipad blue prime day

iPad 12 Rumored to Get iPhone 17's A19 Chip, Breaking Apple Tradition

Wednesday December 10, 2025 12:22 pm PST by
The next-generation low-cost iPad will use Apple's A19 chip, according to a report from Macworld. Macworld claims to have seen an "internal Apple code document" with information about the 2026 iPad lineup. Prior documentation discovered by MacRumors suggested that the iPad 12 would be equipped with an A18 chip, not an A19 chip. The A19 chip was just released this year in the iPhone 17, and...
studio display purple

Apple Studio Display 2 Code Hints at 120Hz ProMotion, HDR, A19 Chip

Thursday December 11, 2025 4:19 am PST by
Apple's next-generation Studio Display is expected to arrive early next year, and a new report allegedly provides a couple more details on the external monitor's capabilities. According to internal Apple code seen by Macworld, the new external display will feature a variable refresh rate capable of up to 120Hz – aka ProMotion – as well as support for HDR content. The current Studio...