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

Apple today seeded the third beta of an upcoming macOS Catalina 10.15.5 update to developers for testing purposes, two weeks after seeding the second 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.

Related Forum: macOS Catalina

Popular Stories

Aston Martin CarPlay Ultra Screen

Apple's CarPlay Ultra to Expand to These Vehicle Brands Later This Year

Sunday February 1, 2026 10:08 am PST by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly nine months later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. In his Powe...
Apple Logo Black

Apple's Next Launch is 'Imminent'

Sunday February 1, 2026 12:31 pm PST by
The calendar has turned to February, and a new report indicates that Apple's next product launch is "imminent," in the form of new MacBook Pro models. "All signs point to an imminent launch of next-generation MacBook Pros that retain the current form factor but deliver faster chips," Bloomberg's Mark Gurman said on Sunday. "I'm told the new models — code-named J714 and J716 — are slated...
iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
We are still waiting for the iOS 26.3 Release Candidate to come out, so the first iOS 26.4 beta is likely still at least a week or two away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...
Apple MacBook Pro M4 hero

New MacBook Pros Reportedly Launching Alongside macOS 26.3

Sunday February 1, 2026 5:42 am PST by
Apple is planning to launch new MacBook Pro models with M5 Pro and M5 Max chips alongside macOS 26.3, according to Bloomberg's Mark Gurman. "Apple's faster MacBook Pros are planned for the macOS 26.3 release cycle," wrote Gurman, in his Power On newsletter today. "I'm told the new models — code-named J714 and J716 — are slated for the macOS 26.3 software cycle, which runs from...
iOS 26 Home Feature

Apple Gives Final Warning to Home App Users

Tuesday February 3, 2026 8:55 am PST by
In 2022, Apple introduced a new Apple Home architecture that is "more reliable and efficient," and the deadline to upgrade and avoid issues is fast approaching. In an email this week, Apple gave customers a final reminder to upgrade their Home app by February 10, 2026. Apple says users who do not upgrade may experience issues with accessories and automations, or lose access to their smart...

Top Rated Comments

star-affinity Avatar
75 months ago
Looking forward to the release of 10.15.5 since everything in Catalina will be super stable by then, right? ??
Score: 16 Votes (Like | Disagree)
roar08 Avatar
75 months ago
I'll be happy if it just fixes the intermittent kernel panics in 10.15.4.
Score: 14 Votes (Like | Disagree)
ivanpasic Avatar
75 months ago

I'll be happy if it just fixes the intermittent kernel panics in 10.15.4.
Did it? This issue is killing me. My MBP crashes ten times a day!
Score: 9 Votes (Like | Disagree)
Th3ChaOsW3aver Avatar
75 months ago
I really hope this update resolves some of my software issues on my 16 inch macbook.
1) it shuts down when in sleep mode often
2) graphics switching glitches
3) internet connectivity issues, it's connected but the internet itself is not working properly.
4) ghosting/jittery scrolling

I'm upset since these problems arose after updating to 10.15.4 from 10.15.3.
Score: 6 Votes (Like | Disagree)
navaira Avatar
75 months ago

Did it? This issue is killing me. My MBP crashes ten times a day!
…that answers my "so is the whole thing out of beta stage yet" question, thanks…
Score: 5 Votes (Like | Disagree)
4487549 Avatar
75 months ago

Looking forward to the release of 10.15.5 since everything in Catalina will be super stable by then, right? ??
Get ready for 10.15.6 supplemental update 32...
Score: 5 Votes (Like | Disagree)