Apple Seeds Fourth Beta of macOS Sequoia 15.5 [Update: Public Beta Available]

Apple today seeded the fourth beta of an upcoming macOS Sequoia 15.5 update to developers for testing purposes, with the software coming a week after Apple released the third macOS Sequoia 15.5 beta.

macOS Sequoia Night Feature
Registered developers can opt-in to the macOS Sequoia beta through the Software Update section of the System Settings app. An Apple ID associated with an Apple Developer account is required to get the beta.

macOS Sequoia 15.5 appears to be a minor update so far, and no notable new features were found in the first three betas.

Work on new features for macOS Sequoia is winding down, as Apple will soon transition to macOS 16. The next-generation version of macOS is set to be unveiled at WWDC in June.

Related Forum: macOS Sequoia

Popular Stories

Early Black Friday Deals 1

The Best Early Black Friday Apple Deals on AirPods, Apple Watch, iPad, and More

Saturday November 8, 2025 6:16 am PST by
We're officially in the month of Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When ...
2024 iPhone Boxes Feature

Apple Adjusts Trade-In Values for iPhones, iPads, Macs, and More

Thursday November 6, 2025 11:12 am PST by
Apple today updated its trade-in values for select iPhone, iPad, Mac, and Apple Watch models. Trade-ins can be completed on Apple's website, or at an Apple Store. The charts below provide an overview of Apple's current and previous trade-in values in the U.S., according to its website. Maximum values for most devices either decreased or saw no change, but the iPad Air received a slight bump. ...
All Screen iPhone 2027 Feature 1

Apple to Hide Selfie Camera Under Display of 20th Anniversary iPhone

Monday November 10, 2025 1:55 am PST by
Apple will conceal the front-facing camera under the screen of its 2027 iPhone, a Chinese leaker said today, corroborating reports that Apple's 20th anniversary iPhone will have no visible cutouts in the display. Weibo-based account Digital Chat Station said Apple's development of under-screen camera technology was progressing as planned for adoption in 2027, one year after it will...
Apple fitness plus feature

Future of Apple Fitness+ 'Under Review'

Sunday November 9, 2025 5:30 am PST by
The future of Apple Fitness+ is "under review" amid a reorganization of the service, according to Bloomberg's Mark Gurman. In the latest edition of his "Power On" newsletter, Gurman said that Apple Fitness+ remains one of the company's "weakest digital offerings." The service apparently suffers from high churn and little revenue. Nevertheless, Fitness+ has a small, loyal fanbase that...
m1 chip slide

Five Years of Apple Silicon: M1 to M5 Performance Comparison

Monday November 10, 2025 1:08 pm PST by
Today marks the fifth anniversary of the Apple silicon chip that replaced Intel chips in Apple's Mac lineup. The first Apple silicon chip, the M1, was unveiled on November 10, 2020. The M1 debuted in the MacBook Air, Mac mini, and 13-inch MacBook Pro. The M1 chip was impressive when it launched, featuring the "world's fastest CPU core" and industry-leading performance per watt, and it's only ...
Liquid Glass General Feature

Apple Shares Liquid Glass Design Gallery

Thursday November 6, 2025 2:45 pm PST by
Apple is promoting the new Liquid Glass design in iOS 26, showing off the ways that third-party developers are embracing the aesthetic in their apps. On its developer website, Apple is featuring a visual gallery that demonstrates how "teams of all sizes" are creating Liquid Glass experiences. The gallery features examples of Liquid Glass in apps for iPhone, iPad, Apple Watch, and Mac. Apple...
iOS 26

iOS 26.1 Available Now With These 8 New Features

Monday November 3, 2025 5:54 am PST by
Following more than a month of beta testing, Apple released iOS 26.1 on Monday, November 3. The update includes a handful of new features and changes, including the ability to adjust the look of Liquid Glass and more. Below, we outline iOS 26.1's key new features. Liquid Glass Toggle iOS 26.1 lets you choose your preferred look for Liquid Glass. In the Settings app, under Display...
iPhone Satellite Feature

Apple Developing These 5 New Satellite Features for iPhone

Sunday November 9, 2025 6:07 am PST by
Apple is working on a series of new satellite connectivity features for the iPhone, Bloomberg's Mark Gurman reports. In this week's "Power On" newsletter, Gurman revealed that the new features in development include: Apple Maps via satellite: Navigation in Apple Maps without cellular or Wi-Fi connectivity. Photos in Messages via satellite: Support for sending photos in the Messages...
iphone air thinness

iPhone Air Sales Are So Bad That Apple's Delaying the Next-Generation Version

Monday November 10, 2025 11:41 am PST by
The thin, light iPhone Air sold so poorly that Apple has decided to delay the launch of the next-generation iPhone Air that was scheduled to come out alongside the iPhone 18 Pro, reports The Information. Apple initially planned to release a new iPhone Air in fall 2026, but now that's not going to happen. Since the iPhone Air launched in September, there have been reports of poor sales...
maxresdefault

In-Depth iPhone Battery Experiment Pits Slow Charging Against Fast Charging

Friday November 7, 2025 1:19 pm PST by
HTX Studio this week shared the results from a six-month battery test that compared how fast charging and slow charging can affect battery life over time. Using six iPhone 12 models, the channel set up a system to drain the batteries from five percent and charge them to 100 percent over and over again. Three were fast charged, and three were slow charged. Another set of iPhones underwent...

Top Rated Comments

tywebb13 Avatar
7 months ago
build number is 24F5068b

other builds released today:

macOS 14.7.6 RC 3 (23H622)
macOS 13.7.6 RC 3 (22H622)
iOS 18.5 beta 4 (22F5068a)
iPadOS 18.5 beta 4 (22F5068a)
tvOS 18.5 beta 4 (22L5566a)
audioOS 18.5 beta 4 (22L5566a)
visionOS 2.5 beta 4 (22O5467a)
watchOS 11.5 beta 4 (22T5567a)
Score: 8 Votes (Like | Disagree)
fivenotrump Avatar
7 months ago

Apparent new feature : In Time Machine settings, ability to set intervals of : 1 hrs, 1 day, 1 week, manual. no more 3rd party apps to do this unless you really need a different interval.
this isn't new!
Score: 3 Votes (Like | Disagree)
nt5672 Avatar
7 months ago

Any news if the firmware gets updated with this release?
Im using a Sonnet eGFx Breakaway Box and it used to work perfectly before Sequoia 15.4 in macOS and bootcamp

Now it does NOT work at all.

The Sonnet is connected to a 2018 Macmini.
You really expect it to work. Apple stuff just barely works with Apple stuff. Apple is the new Microsoft from 1990s where stuff only works on stuff from the same manufacturer.
Score: 3 Votes (Like | Disagree)
Keblar Avatar
7 months ago

You really expect it to work. Apple stuff just barely works with Apple stuff. Apple is the new Microsoft from 1990s where stuff only works on stuff from the same manufacturer.
It worked flawlessly during 3 years straight.
Score: 3 Votes (Like | Disagree)
Steve01234 Avatar
7 months ago
Apparent new feature : In Time Machine settings, ability to set intervals of : 1 hrs, 1 day, 1 week, manual. no more 3rd party apps to do this unless you really need a different interval.
Score: 2 Votes (Like | Disagree)
Siliconguy Avatar
7 months ago

other builds released today:

macOS 14.7.6 RC 3 (23H622)
macOS 13.7.6 RC 3 (22H622)
What bug are they chasing they can't fix?

Or are they deliberately delaying a security update just to release it with the Sequoia update? If so that's really dumb.
Score: 2 Votes (Like | Disagree)