Apple Seeds Fifth Beta of Upcoming macOS Catalina 10.15.5 Update to Developers [Update: Public Beta Available] - MacRumors
Skip to Content

Apple Seeds Fifth Beta of Upcoming macOS Catalina 10.15.5 Update to Developers [Update: Public Beta Available]

by

Apple today seeded the fifth beta of an upcoming macOS Catalina 10.15.5 update to developers for testing purposes, two weeks after seeding the fourth beta and over a month 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 from the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.

macOS Catalina 10.15.5 introduces a new Battery Health Management feature for Mac notebooks, which is designed to extend the overall lifespan of a Mac’s battery by reducing the rate of chemical aging.

The Battery Health Management feature analyzes the battery health of a laptop and its charging pattern, and in some cases, will preserve battery longevity and health by not charging a MacBook to its full capacity, which can reduce battery life.

When a Mac is used plugged in and the battery is largely kept full, Battery Health Management will kick in and will stop short of a full charge. The feature can be enabled and disabled in the Energy Saver section of the System Preferences app.

The macOS Catalina 10.15.5 update also addresses an issue that caused large data transfers to RAID volumes to freeze up the Finder app. With the update, large data transfers will no longer cause Finder to become unresponsive.

After installing macOS Catalina 10.15.4, some Mac users began experiencing occasional system crashes, primarily caused by large file transfers. The new update should successfully fix the problem.

Related Forum: macOS Catalina

Top Rated Comments

bpeeps Avatar
bpeeps
78 months ago

Seriously, no release today?! Wow.

The software and released used to be good.They just keep finding more issues than not. Probably says something about their quality control. The #NewApple is such a disappointment.
Complains about Apple taking time to make sure the release is correct and also them not releasing it today. This is actually hilarious.😂
Score: 8 Votes (Like | Disagree)
A
Apple TarHeel
78 months ago
They FINALLY FIXED the dock not disappearing after the Mac is restarted or Shut Down!
Score: 6 Votes (Like | Disagree)
K
kissmo
78 months ago

Wow, I was expecting a release today too! Hmmm, maybe they are going for some serious stability improvements?
Well putting probability and plausibility in perspective.

Plausibility: they prioritize iOS over Mac OS.
Probability: 50% they work on serious stability improvements. 50% they prioritize iOS over Mac OS.

:)

Whatever it is, I was hoping it comes today. I don't have big issues with Catalina but it's definitely a lesser OS than Mojave for me.
I pray they improve it and they take their time....
Score: 5 Votes (Like | Disagree)
BarrettF77 Avatar
BarrettF77
78 months ago

Well putting probability and plausibility in perspective.

Plausibility: they prioritize iOS over Mac OS.
Probability: 50% they work on serious stability improvements. 50% they prioritize iOS over Mac OS.

:)

Whatever it is, I was hoping it comes today. I don't have big issues with Catalina but it's definitely a lesser OS than Mojave for me.
I pray they improve it and they take their time....
agreed. I’ll probably build a hackintosh given they don’t take the platform seriously as they used to. This MacBook will be my last as I’m tired of lackluster support and development. Surprising for my household having gone from Apple lovers to just this is the least offensive option.
Throw that in one of your keynotes mr cook. “Customers stay with us because we aren’t the worst option.”....
Score: 4 Votes (Like | Disagree)
K
kissmo
78 months ago
Ahhh common Apple! I was hoping for the final release today :(
I want that battery feature so bad because I am very hectic with the way I handle the battery on the MBP....
Score: 4 Votes (Like | Disagree)
S
skippermonkey
78 months ago
MR continually fails to mention one really important aspect of 10.15.5, which is the support for OTOY's Octane rendering software. There's some serious under-the-hood stuff going on with Metal to make Octane (and possibly other apps) work, which probably has important implications for GPU support, yet it's never even mentioned in these 'news' stories.
Score: 3 Votes (Like | Disagree)
Read All Comments

Popular Stories

Apple Card iPhone 16 Pro Feature

Apple Card Promo to Offer Free AirPods Pro 3

Friday May 15, 2026 8:59 am PDT by
Starting as early as next week, customers who sign up for an Apple Card at Apple's retail stores in the U.S. will receive $249 cash back when they purchase AirPods Pro 3, according to Bloomberg's Mark Gurman. The promotion has yet to be officially announced by Apple, so exact terms and conditions are not available at this time. AirPods Pro 3 are priced at $249 in the U.S., so customers who...
Read Full Article • 52 comments
airpods pro 3 pink

New Apple Card Holders Can Get Free AirPods Pro 3, But There's a Catch

Monday May 18, 2026 8:11 am PDT by
Apple today launched a new promotion offering new Apple Card holders the chance to earn back the cost of AirPods Pro 3 through monthly cash rebates, but there is a recurring spend requirement attached. Customers who open a new Apple Card account and purchase AirPods Pro 3 directly from Apple by June 15 will qualify. Starting July 1 and running through April 30, 2027, cardholders can earn $25 ...
Read Full Article • 63 comments
Apple WWDC25 iOS 26 CarPlay Light mode 250609

Six Popular iPhone Apps Now Available on CarPlay

Thursday May 14, 2026 9:10 am PDT by
Apple's CarPlay system for accessing iPhone apps on a vehicle's dashboard screen has received six popular apps in recent weeks: ChatGPT, Perplexity, Grok, Google Meet, WhatsApp, and the indie artist streaming platform Audiomack. Make sure you have the latest version of each app and they will automatically appear on CarPlay. ChatGPT Starting with iOS 26.4, CarPlay supports voice-based...
Read Full Article • 29 comments