Apple Seeds Third Beta of Upcoming macOS Catalina 10.15.5 Update to Developers - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

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

Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro and iPhone Ultra: Pre-Orders and Release Date

Thursday July 30, 2026 6:12 am PDT by
Apple has yet to reveal when the iPhone 18 Pro and iPhone Ultra will be announced and released, but the dates usually follow a familiar pattern. Labor Day is September 7 this year. The last time the holiday fell on that day was in 2020, but the iPhone event that year was delayed until October due to the COVID-19 pandemic. So, the last time Labor Day was on September 7 in a normal year was in ...
Apple Event Logo

Apple Working on All-New Operating System

Wednesday July 29, 2026 11:39 am PDT by
Apple is developing an all-new operating system that is essentially a mix of tvOS, watchOS, and iOS, according to Bloomberg's Mark Gurman. In a report this week, he said the operating system will feature a grid of icons, widgets, and apps, along with customizable clock faces. The new software platform is intended for Apple's long-rumored smart home hub. With built-in facial recognition,...
Dynamic Island iPhone 18 Pro Feature

iPhone 18 Pro: Twelve Changes Coming to Apple's Next Flagship

Thursday July 30, 2026 3:43 am PDT by
We're less than two months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a dramatic change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year,...

Top Rated Comments

star-affinity Avatar
82 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)
82 months ago
I'll be happy if it just fixes the intermittent kernel panics in 10.15.4.
Score: 14 Votes (Like | Disagree)
82 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
82 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
82 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)
82 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)

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors