Apple Seeds First Beta of Upcoming macOS Catalina 10.15.5 Update to Developers - MacRumors
Skip to Content

Apple Seeds First Beta of Upcoming macOS Catalina 10.15.5 Update to Developers

by

Apple today seeded the first beta of an upcoming macOS Catalina 10.15.5 update to developers for testing purposes, one week after releasing macOS Catalina 10.15.4 with Screen Time Communication Limits, iCloud Folder Sharing, and real-time Apple Music lyrics.

macos catalina wallpaper
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.

We don't know what improvements the fifth update to ‌‌macOS Catalina‌‌ will bring, but it likely includes performance improvements, security updates, and fixes for bugs that weren't able to be addressed in the macOS Catalina 10.15.4 update.

Related Forum: macOS Catalina

Popular Stories

iphone duo

Apple Announces Foldable 'iPhone Duo'

Wednesday September 9, 2026 10:56 am PDT by
Apple today announced the "iPhone Duo," a new kind of iPhone featuring two screens and a foldable inner display. The two halves of the iPhone Duo connect into a single continuous frame with the same aspect ratio across both displays, and Apple said the transition between open and closed is designed to feel fluid. When fully open, Apple says it is the thinnest iPhone ever made, with an...
Read Full Article • 713 comments
Surprise and Shine Live Coverage Article

Apple Event Live Blog: iPhone Duo, iPhone 18 Pro, and More

Wednesday September 9, 2026 9:10 am PDT by
Apple's "Surprise and Shine" event kicks off today at 10:00 a.m. Pacific Time, where we're expecting to see the foldable iPhone Duo, the iPhone 18 Pro and Pro Max, Apple Watch Series 12 and Ultra 4 models, new AirPods 5 earphones, and perhaps some other announcements. Apple is providing a live video stream on its website, on YouTube, and in the company's TV app across various platforms. We...
Read Full Article • 1304 comments
iOS 27 Feature Dark

Apple Announces iOS 27 Release Date

Wednesday September 9, 2026 10:46 am PDT by
At its event today unveiling the iPhone 18 Pro, AirPods 5, Apple Watch Series 12, and more, Apple announced that iOS 27 will be released later this month. iOS 27 has already been available as a developer beta since June and as a public beta since July, and Apple today said that the update will be released for all users with a compatible iPhone model on Monday, September 14. iOS 27 is...
Read Full Article • 40 comments

Top Rated Comments

J
jet lag
84 months ago
Hopefully this will stop the cursor takes forever to wake up and the random freezes.
Score: 8 Votes (Like | Disagree)
BWhaler Avatar
BWhaler
84 months ago
Maybe, just maybe, this will be the first release of Catlina that we should trust.

Maybe.
Score: 7 Votes (Like | Disagree)
B
b656
84 months ago
Still on 10.14.6 and happy.
one more to go till we get 10.15.6
Then I'll consider upgrading.
Keep going Apple.
Score: 5 Votes (Like | Disagree)
X
xnsys
84 months ago

Maybe, just maybe, this will be the first release of Catlina that we should trust.

Maybe.
I have lost all faith in Catalina - and if the next release (10.16) is no better, that will be my days of Apple products well and truly over.
Score: 5 Votes (Like | Disagree)
Killerbob Avatar
Killerbob
84 months ago
I don't understand what the heck you guys are all complaining about...

My Mac Pro is from 2013, my wifes MacBook Pro is from 2014, my daughters MacBook is from 2016, and our entertainment center Mac Mini is from 2018, and they ALL run 10.15.4, and they are ALL running perfectly. No issues whatsoever. I use almost all the Adobe CS applications, in addition to O365, Parallels (for gaming) and the usual apps and utilities. I didn't even clean install, but have only upgraded the last 3 years. My wife is using O365 and a range of educational applications, and have no issues. We both leave our Macs running for days at a time.

What I trying to say is; perhaps it is not the OS, but rather your particular installations?
Score: 4 Votes (Like | Disagree)
L
len5
84 months ago
Unless you have a newer Mac that requires Catalina then revert back to High Sierra or Mojave. I've got an iMac that's a couple years old and it runs great on High Sierra.
Score: 3 Votes (Like | Disagree)
Read All Comments