Apple Releases Fourth macOS Catalina Public Beta - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases Fourth macOS Catalina Public Beta

by

Apple today seeded the fourth beta of an upcoming macOS Catalina update to its public beta testing group, two weeks after seeding the third public beta and a day after seeding the fifth macOS Catalina 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 In Catalina, iTunes has been replaced by Music, Podcasts, and TV apps.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 not support 32-bit apps, 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

95 months ago
I have iOS/iPadOS 13 installed on my phone and iPad, but for some reason, I just can’t get myself to download a beta version of my computer OS. Looking forward to using it in about 6 weeks though.
Score: 4 Votes (Like | Disagree)
95 months ago
To those of you who haven’t installed the beta at all, and were planning on using it as your primary OS- I highly recommend that you continue to wait.
Score: 2 Votes (Like | Disagree)
95 months ago
I have tried enrolling and unenrolling several times. Still the software update dialog says, "requested update not found". I have also tried rebooting the machine but still no luck. Any advice? I'm running macOS Mojave 10.14.6
Score: 2 Votes (Like | Disagree)
macwinman Avatar
95 months ago
Thanks to JDRN, I at least understand half of what's going on now. Someone at Apple goofed -- if your computer is not already enrolled in the 10.15 beta, the enrollment tool that's available to download now won't work. Here's why.

If you go to beta.apple.com, login and then attempt to download the "Public Beta Access Utility", the link is pointing to this right now:

https://beta.apple.com/sp/downloads/projects/1001260/downloads/1010768

Clicking that link will download a DMG file. Double-click on the DMG file to mount the virtual volume. If you "get info" on the package inside this volume, you'll discover it was last modified on 05/30/18 -- yes, not 2019. If you install the package, it will set your Software Update catalog to this (I substituted https:// with XXXXX at the beginning because this editor keeps turning it into a hotlink if I leave it there):

[B]XXXXXswscan.apple.com/content/catalogs/others/index-10.14beta-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz[/B]

Yes, this is the enrollment tool for the Mojave beta, not the Catalina beta. Oops! Want proof? Launch Terminal and execute this command to see where your Software Update is now pointed:

sudo defaults read /Library/Preferences/com.apple.SoftwareUpdate CatalogURL

You should see that "10.14beta" in the reply string.

Even though this installer is obsolete, you should still run it because it will create the SeedEnrollment file you need. Software Update will then check for updates and discover the "requested version of macOS is not available" since it's looking for the Mojave beta.

Once you receive that message, execute this command in Terminal to fix the the catalog location (again, where you see XXXXX substitute https:// because this board keeps trying to put a hotlink in the middle of my text!):

sudo /usr/sbin/softwareupdate --set-catalog XXXXXswscan.apple.com/content/catalogs/others/index-10.15beta-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz

Check for updates again and you should now see the Catalina beta is available.

HOWEVER: for me, at least, all this did was allow me to download the latest beta installer onto my MacBook Pro (15-inch, 2019). I tried using it to make a bootable USB installer disk so I could do a complete clean install -- booting on this USB drive still produces the error message about needing to update my installer disk. I can see it's attempting to download what it needs to update my disk but it fails halfway through.

I submitted a report through the Feedback Assistant for both of these issues. Of course, I'm just one of the horde who's sending feedback about the beta. Anyone with a bonafide connection to Apple may want to drop them a line that their beta enrollment tool has been incorrectly downgraded.

As for the other issue, I wish someone would figure that out so I can actually use the new computer I just bought. :(
Score: 1 Votes (Like | Disagree)
95 months ago
Me too - same issue. I'm using a mid-2015 MacBook Pro with latest release of Mojave.
This fix worked for me. https://www.reddit.com/r/MacOSBeta/comments/clb8at/the_requested_version_of_macos_is_not_available/
Score: 1 Votes (Like | Disagree)
otter247 Avatar
95 months ago
I have tried enrolling and unenrolling several times. Still the software update dialog says, "requested update not found". I have also tried rebooting the machine but still no luck. Any advice? I'm running macOS Mojave 10.14.6
I have the exact issue and am also on latest Mojave 10.14.6. Please repost if you find a solution. Thanks.
Score: 1 Votes (Like | Disagree)

Popular Stories

duo aquarium

More Fun iPhone Duo Apps: 30 New Picks to Try

Friday November 6, 2026 3:27 pm PST by
When the iPhone Duo launched, we shared a list of some of the fun apps developers created for the new form factor. Two weeks out, developers are continuing to come up with fresh ideas, so we thought we'd share some of our favorites. Games Marbles Unhinged ($2.99) - Marbles Unhinged is a marble maze designed for the Duo. When you fold it, the floor turns into a ramp. If you stand the top...
apple pro tell logo

Apple Launching Five New Products Today

Thursday November 5, 2026 12:59 am PST by
Apple is launching five new products on Friday, November 6, following pre-orders that opened last week, including its first touchscreen MacBook Pro models. The following new products will be available from today: iPad mini with OLED display and A20 Pro chip iMac with M6 chip 14-inch MacBook Pro with M6 chip 14-inch MacBook Pro with OLED touchscreen 16-inch MacBook Pro with OLED...
iOS 28 AI

Apple Taking New Approach to Developing iOS 28 and macOS 28

Sunday November 8, 2026 7:42 am PST by
Apple has made a change to its development process for iOS 28, macOS 28, and corresponding software updates, according to Bloomberg's Mark Gurman. In his Power On newsletter today, he said Apple separates development of each year's new operating systems into three major stages. Typically, he said each stage consists of four weeks of coding followed by a four-week "convergence" period where...
Latest Stories
Apple Store Subscription Sign-Up Controversy Exposed
Apple Store Subscription Sign-Up Controversy Exposed
5 hours ago
Siri AI Rumored to Become 'More Like an Agent' as Early as Next Year
Siri AI Rumored to Become 'More Like an Agent' as Early as Next Year
15 hours ago
Apple Taking New Approach to Developing iOS 28 and macOS 28
Apple Taking New Approach to Developing iOS 28 and macOS 28
16 hours ago
Early Apple Black Friday Deals on Apple Watch, MacBook Air, and More
Early Apple Black Friday Deals on Apple Watch, MacBook Air, and More
1 day ago
'Backglow' Lets You Customize New MacBook Pro's Glowing Apple Logo
'Backglow' Lets You Customize New MacBook Pro's Glowing Apple Logo
1 day ago
Top Stories: Apple Product Launches, iOS 27.3 Beta, and More
Top Stories: Apple Product Launches, iOS 27.3 Beta, and More
2 days ago
More Fun iPhone Duo Apps: 30 New Picks to Try
More Fun iPhone Duo Apps: 30 New Picks to Try
2 days ago
Hands-On With Apple's New OLED Touchscreen MacBook Pro
Hands-On With Apple's New OLED Touchscreen MacBook Pro
2 days ago
Apple Store With All-New Design Opening Soon in Southern California
Apple Store With All-New Design Opening Soon in Southern California
2 days ago
Control the Glowing Apple Logo on Your New MacBook Pro
Control the Glowing Apple Logo on Your New MacBook Pro
3 days ago
Apple Shares New 'Apple Card: Apply and Use in Minutes' Ad
Apple Shares New 'Apple Card: Apply and Use in Minutes' Ad
3 days ago
Apple Says More Than 100,000 Apps Optimized for iPhone Duo, Here's What's Still Missing
Apple Says More Than 100,000 Apps Optimized for iPhone Duo, Here's What's Still Missing
3 days ago
Early Black Friday Deals Kickoff With Steep Discounts on Apple Watch Ultras and More
Early Black Friday Deals Kickoff With Steep Discounts on Apple Watch Ultras and More
3 days ago
The MacRumors Show: iOS 27.3 Looks Like a Huge Update
The MacRumors Show: iOS 27.3 Looks Like a Huge Update
3 days ago
Best Buy's Black Friday Event Begins With Sitewide Savings on Apple, TVs, More
Best Buy's Black Friday Event Begins With Sitewide Savings on Apple, TVs, More
3 days ago
Apple Releasing Yet Another Two New Products Next Week
Apple Releasing Yet Another Two New Products Next Week
3 days ago
MacBook Air Drops to Lowest Price in Months With Amazon's $250 Discount
MacBook Air Drops to Lowest Price in Months With Amazon's $250 Discount
3 days ago
Apple Rumored to Drop the iPhone's Action Button Next Year
Apple Rumored to Drop the iPhone's Action Button Next Year
3 days ago
Apple's Extended Return Policy Now in Effect for 2026 Holiday Season
Apple's Extended Return Policy Now in Effect for 2026 Holiday Season
3 days ago
Apple Music Classical Updated With New Icon and Refreshed Design
Apple Music Classical Updated With New Icon and Refreshed Design
3 days ago
OLED iPad Mini, M6 iMac, and New MacBook Pros Available From Today
OLED iPad Mini, M6 iMac, and New MacBook Pros Available From Today
3 days ago
Apple Surveys iPhone Duo Buyers About Crease and Camera
Apple Surveys iPhone Duo Buyers About Crease and Camera
3 days ago
Apple's First Touchscreen Mac is Now Arriving to Customers
Apple's First Touchscreen Mac is Now Arriving to Customers
3 days ago
Claude Gets Personal Finance Feature With Bank Account Linking
Claude Gets Personal Finance Feature With Bank Account Linking
3 days ago
Apple Arcade Adds Crossy Road Rush and NBA 2K27
Apple Arcade Adds Crossy Road Rush and NBA 2K27
3 days ago
Apple's New HomeView Smart Home Hub: Here's How Much RAM It Has
Apple's New HomeView Smart Home Hub: Here's How Much RAM It Has
3 days ago
iPad Mini vs. iPad Air Buyer's Guide: Now Just $50 Apart
iPad Mini vs. iPad Air Buyer's Guide: Now Just $50 Apart
3 days ago
First iOS 27.3 and macOS Golden Gate 27.3 Public Betas Now Available
First iOS 27.3 and macOS Golden Gate 27.3 Public Betas Now Available
4 days ago
Apple Announces a New Mac Sales Record
Apple Announces a New Mac Sales Record
4 days ago
Paid $200 for Logic Pro? Apple Says You Won't Get This New Feature
Paid $200 for Logic Pro? Apple Says You Won't Get This New Feature
4 days ago