Apple Seeds First Beta of Upcoming macOS Catalina 10.15.3 Update to Developers - MacRumors
Skip to Content

Apple Seeds First Beta of Upcoming macOS Catalina 10.15.3 Update to Developers

by

Apple today seeded the first beta of an upcoming macOS 10.15.3 update to developers for testing purposes, one week after releasing the macOS Catalina 10.15.2 update.

The new ‌‌macOS Catalina‌‌ beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.

macos catalina wallpaper
We don't yet know what improvements the third update to macOS Catalina will bring, but it will likely focus on performance improvements, security updates, and fixes for bugs that weren't able to be fixed in the macOS Catalina 10.15.2 update.

If we find anything new in the first macOS Catalina 10.15.3 update, we'll update this article.

Related Forum: macOS Catalina

Top Rated Comments

82 months ago
Even if I was ready to invest time into migrating off applications that are 32-bit, the bugs still make Catalina look like a hot mess. I really hope they can get their act together and squish these bugs.
Score: 3 Votes (Like | Disagree)
luvbug Avatar
82 months ago
I returned my new mbp 16" today. I figured if I was going to have to wait several more months for a Catalina update and graphics driver that are actually production quality, I might as well just return it and wait for the next hardware update. Perhaps by then, Apple may actually get their OS sh*t together. And it sure seems to me, lately, that iCloud services a bit unstable at times. I'm thinking the complex iCloud services interactions are starting to be an issue (inter-service dependencies and latency).
Score: 3 Votes (Like | Disagree)
hoyhoy Avatar
82 months ago
The photo and music syncing from Finder is CRAZYTOWN. It basically doesn't even work at this point. Photos on iOS is totally unusable now. There's the album bug mentioned above (I assume he meant nested albums, because that's still broken), random duplications, missing Photos. Music syncing is busted too. Album art is missing. Tracks aren't syncing. I'm seriously about to roll back to High Sierra if they're just going to break features that have worked since 2005 until now. Also, has anyone noticed that if you crop a screenshot on iOS, the cropped version only persists 20% of the time? This is literally the WORST iOS/macOS release I have ever seen.
Score: 3 Votes (Like | Disagree)
82 months ago
Does it include a fix for Apple's Mail Data Loss problem :rolleyes: Apple, this is very bad and needs an emergency fix! :mad:
Score: 3 Votes (Like | Disagree)
82 months ago
One more update and it might be time to seriously consider Catalina
Score: 2 Votes (Like | Disagree)
nutmac Avatar
82 months ago
macOS features marked for spring release:

Communication Limits
Communication Limits let you control who your children can communicate with and who can communicate with them throughout the day and during downtime.

iCloud Drive folder sharing
You can now share folders with a private link. Anyone who has access can see the folder in iCloud Drive, add new files, and get the latest versions of files.

Neither seem to be on this build.
Score: 2 Votes (Like | Disagree)

Popular Stories

Apple Event Logo

Apple to Launch These 15+ New Products Later This Year

Friday March 27, 2026 2:03 pm PDT by
March has been an incredibly busy month for Apple, with the company unveiling more than 10 new products and accessories. We said hello to the MacBook Neo at the start of the month, and we bid farewell to the Mac Pro at the end of it. Nevertheless, there is still a lot more to come this year. Beyond the usual annual updates to iPhones and Apple Watches, Apple's all-new smart home hub is...
iOS 26

iOS 26.4 Adds Two New Features to CarPlay

Tuesday March 24, 2026 1:55 pm PDT by
iOS 26.4 was released today, and it includes a couple of new features for CarPlay: an Ambient Music widget and support for voice-based chatbot apps. To update your iPhone 11 or newer to iOS 26.4, open the Settings app and tap on General → Software Update. CarPlay will automatically offer the new features so long as the iPhone connected to your vehicle is running iOS 26.4 or later....
Mac Pro Feature Teal

Apple Confirms Mac Pro Is Dead, No Future Models Planned

Thursday March 26, 2026 2:04 pm PDT by
Apple has discontinued the Mac Pro and has removed the machine from its website, reports 9to5Mac. Apple said it does not plan to design a new version of the Mac Pro, and no new model will be coming in the future. The Mac Pro was last updated in 2023, which was when Apple added an M2 Ultra Apple silicon chip, but the chassis has not been refreshed since 2019. Apple redesigned the Mac Pro to...