Apple today seeded the fourth beta of an upcoming macOS Catalina 10.15.6 update to developers for testing purposes, a week and a half releasing the third beta and over a month after releasing macOS Catalina 10.15.5 with battery health management features for Macs.

macos catalina wallpaper
The macOS Catalina 10.15.6 beta can be downloaded from the Software Update mechanism in System Preferences after the proper profile has been installed from the Apple Developer Center.

There's no word yet on what improvements the new update to macOS Catalina brings, but it likely includes performance improvements, security updates, and fixes for bugs that weren't able to be addressed in the previous update. No new features were found in the first three betas, but we'll update this article should anything new be found in the fourth beta.

Related Forum: macOS Catalina

Top Rated Comments

jb-net Avatar
61 months ago
Is Apple even interested in fixing all the bugs in Catalina or a the just working on their ARM project? There are so many open bugs in Catalina, its mind-blowing! :mad:
Score: 12 Votes (Like | Disagree)
ScooterComputer Avatar
61 months ago

There are so many open bugs in Catalina, its mind-blowing! :mad:
What’s especially infuriating to me, as a 2012 MacBook Pro user, is that Apple has ONCE AGAIN decided to abandon a large chunk of users on a really buggy OS. Last time it was High Sierra. At this point, it’s pretty naked they’re doing it to drive new sales, which is supremely scummy. Worse IMHO is that they are cleaving off good popular work horse Macs, while supporting 4 years of known-garbage MacBook keyboards and warmed-over hard-drive-based iMacs. It’s like I’m being punished for not being stupid and just buying whatever crap Apple decided to poop out since 2016.

The community needs to get smarter, more vocal over this nonsense; it’s getting worse, not better. This Exec Team is revealing itself to be despicable.
Score: 7 Votes (Like | Disagree)
RLK7 Avatar
61 months ago
Be careful! With a 2018 MacBook Pro 15 it wont recognize your keyboard or trackpad so I can’t log in! Even safe mode doesn’t let you use the keyboard/mouse. How does something that basic get through even the first beta?
Score: 3 Votes (Like | Disagree)
TheSkywalker77 Avatar
61 months ago
Well, here goes what is likely one of the last updates to my 2012 MBP. It’s been a fun ride.


Time to wait for dosdude1’s Big Sur patcher! :)
Score: 3 Votes (Like | Disagree)
dickie001x Avatar
61 months ago

I finally bit the bullet a few months ago and moved my Macs from High Sierra to Mojave - I wanted to see if there were going to be any glaring issues before High Sierra fell off the security fix wagon.

All in all, Mojave seems mostly reliable (which wasn't my experience with provisional installs of earlier versions of Mojave). Main difference from High Sierra is that it's a bit more locked down security-wise, you have sometimes to go into Security & Privacy preferences to authorize special access for certain apps when they're first installed. AND the biggest bugaboo there is that you don't always get a notification that you need to do that - but if you miss the initial 30 minute window to approve the app's access... you're SOL!!

(actually you're not completely SOL, you can usually completely uninstall the app, reboot and then reinstall to restart another 30-minute authorization window. But it can be a silent failure, with no explanation regarding why an app isn't functioning as expected).
Disable Gatekeeper with the following command in Teminal:

sudo spctl --master-disable
Score: 2 Votes (Like | Disagree)
5097842 Avatar
61 months ago

Still running High Sierra here and will upgrade to Mojave when my apps end support for it and Apple requires 10.14 or later. My concern is, should I just leave my MBP 2015 at Mojave since it seems Catalina and later seems not be particularly worth it both feature and stability wise? All I've been hearing about Sierra since it was launched is stability issues and bugs.
Yes, I would stick with Mojave. My MBA is still on Mojave, unfortunately my 16" MBP only runs Catalina. I may try the Big Sur beta on the Air to see how it compares to Catalina. (don't want my primary machine on a beta) Hopefully Big Sur is an improvement ...
Score: 2 Votes (Like | Disagree)

Popular Stories

iPhone 17 Pro Render Front Page Tech

iPhone 17 Pro Launching Later This Year With These 8 New Features

Tuesday March 4, 2025 3:15 pm PST by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. iPhone 17 Pro's alleged design via Front Page Tech Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone...
Apple MacBook Air hero

Apple Announces New MacBook Air With M4 and 'Sky Blue' Color Option

Wednesday March 5, 2025 6:02 am PST by
Apple today announced refreshed 13- and 15-inch MacBook Air models, now featuring the M4 chip, an upgraded camera, and a new "Sky Blue" color option. "Sky Blue" is an all-new blue finish that joins Midnight, Starlight, and Silver. Apple describes it as a "beautiful, metallic light blue that creates a dynamic gradient when light reflects off of its surface." Space Gray is no longer available. ...
ipad 11 feature

Apple Unveils 11th-Gen iPad With A16 Chip and More Storage

Tuesday March 4, 2025 6:06 am PST by
Apple today announced the 11th-generation iPad, now featuring the A16 chip and more storage. The announcement came alongside the debut of the new iPad Air, which now features the M3 chip. From Apple's press release: The A16 chip provides a jump in performance for everyday tasks and experiences in iPadOS, while still providing all-day battery life. Compared to the previous generation, the...
M3 iPad Air

Apple Announces New iPad Air With M3 Chip, Updated Magic Keyboard

Tuesday March 4, 2025 6:04 am PST by
Apple today introduced new 11-inch and 13-inch iPad Air models with the M3 chip, along with an updated Magic Keyboard for the device. With the M3 chip, the new iPad Air should offer up to 20% faster performance compared to the previous-generation model with the M2 chip, which was released in May 2024. In addition, the M3 chip brings hardware-accelerated ray tracing to the iPad Air for the...
CarPlay Hero

iOS 18.4 Upgrades CarPlay in Two Ways

Tuesday March 4, 2025 8:39 am PST by
The upcoming iOS 18.4 update for the iPhone includes two smaller but meaningful improvements for Apple's in-car iPhone mirroring system CarPlay. First, CarPlay now shows a third row of icons, up from two rows previously. However, this change is only visible in vehicles with a larger center display. For example, a MacRumors Forums member noticed the change in a Toyota Tundra with a 14-inch...
Apple MacBook Air hero

Apple Has Finally Solved One of the MacBook Air's Biggest Limitations

Wednesday March 5, 2025 11:29 am PST by
The new MacBook Air has a useful upgrade: it natively supports up to two external displays, in addition to the laptop's built-in display. In other words, the latest MacBook Air can be used with a pair of external displays without needing to keep the laptop's lid closed. Apple's tech specs for the new 13-inch and 15-inch MacBook Air:Simultaneously supports full native resolution on the...
Mac Studio 2025

Apple Announces New Mac Studio With M4 Max and M3 Ultra Chips, Thunderbolt 5, and More

Wednesday March 5, 2025 6:01 am PST by
Apple today announced that it has updated the Mac Studio with M4 Max and M3 Ultra chip options, Thunderbolt 5 ports, and more. The M4 Max chip was already released last year in the 14-inch and 16-inch MacBook Pro. It can be configured with up to a 16-core CPU, up to a 40-core GPU, and up to 128GB of unified RAM. Geekbench 6 benchmark results indicate that the M4 Max is up to 75% faster than...
Apple MacBook Air hero

Here Are Real-World Photos of the New Sky Blue MacBook Air

Wednesday March 5, 2025 1:47 pm PST by
Apple today updated the MacBook Air with the M4 chip, and the laptop is also available in an all-new Sky Blue finish alongside Silver, Starlight, and Midnight. YouTuber Andru Edwards has showed off the Sky Blue color in a few real-world photos. Keep in mind that the Sky Blue finish is not very saturated. However, the color's appearance will vary based on lighting conditions. View ...
ipad air magic keyboard

Apple Announces Redesigned Magic Keyboard for iPad Air

Tuesday March 4, 2025 6:36 am PST by
Apple today announced a completely redesigned Magic Keyboard accessory for the iPad Air. The new keyboard features a larger built-in trackpad, a 14-key function row, and a new aluminum hinge. From Apple's press release: The all-new Magic Keyboard for iPad Air expands what users can do at an even lower price. The larger built-in trackpad brings greater precision for detail-oriented...