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

Apple Logo Zoomed

Tim Cook Teases Plans for Apple's Upcoming 50th Anniversary

Thursday February 5, 2026 12:54 pm PST by
Apple turns 50 this year, and its CEO Tim Cook has promised to celebrate the milestone. The big day falls on April 1, 2026. "I've been unusually reflective lately about Apple because we have been working on what do we do to mark this moment," Cook told employees today, according to Bloomberg's Mark Gurman. "When you really stop and pause and think about the last 50 years, it makes your heart ...
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
While the iOS 26.3 Release Candidate is now available ahead of a public release, the first iOS 26.4 beta is likely still at least a week 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...
imac video apple feature

Apple Makes Its Second-Biggest Acquisition Ever

Tuesday February 3, 2026 12:45 pm PST by
Apple recently acquired Israeli startup Q.ai for close to $2 billion, according to Financial Times sources. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone maker Beats in 2014. This is also the largest known Apple acquisition since the company purchased Intel's smartphone modem business and patents for $1 billion in 2019....
wwdc sans text feature

Apple Rumored to Announce New Product on February 19

Thursday February 5, 2026 12:22 pm PST by
Apple plans to announce the iPhone 17e on Thursday, February 19, according to Macwelt, the German equivalent of Macworld. The report, citing industry sources, is available in English on Macworld. Apple announced the iPhone 16e on Wednesday, February 19 last year, so the iPhone 17e would be unveiled exactly one year later if this rumor is accurate. It is quite uncommon for Apple to unveil...
Finder Siri Feature

Why Apple's iOS 26.4 Siri Upgrade Will Be Bigger Than Originally Promised

Friday February 6, 2026 3:06 pm PST by
In the iOS 26.4 update that's coming this spring, Apple will introduce a new version of Siri that's going to overhaul how we interact with the personal assistant and what it's able to do. The iOS 26.4 version of Siri won't work like ChatGPT or Claude, but it will rely on large language models (LLMs) and has been updated from the ground up. Upgraded Architecture The next-generation...

Top Rated Comments

tywebb13 Avatar
10 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
10 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
10 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
10 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
10 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
10 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)