Skip to Content

Apple Seeds Third Beta of macOS Sequoia 15.5

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

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

Multicolored Low Cost A18 Pro MacBook Feature

Apple Accidentally Leaks 'MacBook Neo'

Tuesday March 3, 2026 7:00 am PST by
Apple appears to have prematurely revealed the name of its rumored lower-cost MacBook model, which is expected to be announced this Wednesday. A regulatory document for a "MacBook Neo" (Model A3404) has appeared on Apple's website. Unfortunately, there are no further details or images available yet. While the PDF file does not contain the "MacBook Neo" name, it briefly appeared in a link...
MacBook Neo Feature Pastel 1

Apple Announces $599 'MacBook Neo' With A18 Pro Chip

Wednesday March 4, 2026 6:15 am PST by
Apple today announced the "MacBook Neo," an all-new kind of low-cost Mac featuring the A18 Pro chip for $599. The MacBook Neo is the first Mac to be powered by an iPhone chip; the A18 Pro debuted in 2024's iPhone 16 Pro models. Apple says it is up to 50% faster for everyday tasks than the bestselling PC with the latest shipping Intel Core Ultra 5, up to 3x faster for on-device AI workloads,...
MacBook Neo Feature Pastel 1

First MacBook Neo Benchmarks Are In: Here's How It Compares to the M1 MacBook Air

Thursday March 5, 2026 4:07 pm PST by
Benchmarks for the new MacBook Neo surfaced today, and unsurprisingly, CPU performance is almost identical to the iPhone 16 Pro. The MacBook Neo uses the same 6-core A18 Pro chip that was first introduced in the iPhone 16 Pro, but it has one fewer GPU core. The MacBook Neo earned a single-core score of 3461 and a multi-core score of 8668, along with a Metal score of 31286. Here's how the...

Top Rated Comments

12 months ago
build number is 24F5053j

others:

iOS 18.5 beta 3 (22F5053j)
iPadOS 18.5 beta 3 (22F5053j)
macOS 14.7.6 RC 2 (23H616)
macOS 13.7.6 RC 2 (22H616)
tvOS 18.5 beta 3 (22L5559d)
audioOS 18.5 beta 3 (22L5559d)
visionOS 2.5 beta 3 (22O5459c)
watchOS 11.5 beta 3 (22T5559d)
Score: 3 Votes (Like | Disagree)
strangeengine Avatar
12 months ago

The fact that Mail.app loses its place in the email list every time you switch mailboxes may lead me to violence. Hopefully this is fixed too.
Ok, I can report that this appears to be fixed in the developer beta and actually behaves better than it has in a long time. THANKS, Apple!
Score: 2 Votes (Like | Disagree)
Apple MessagePad Avatar
12 months ago
That's not surprising. Rarely are featured added this close to WWDC. They're saving the new stuff for iOS 19 at this point.
Score: 1 Votes (Like | Disagree)
Avenged110 Avatar
12 months ago
I hope it actually fixes some of the crippling bugs, like the unacceptable random black screens on my family's iMac, which require a hard reboot to temporarily remedy. Never saw that in any version prior to 15.4.0. And yet, for all of the work apparently not being spent on features for this final meaningful point release, they'll probably just fix a couple of bugs in features that don't even really matter.
Score: 1 Votes (Like | Disagree)
con2apple Avatar
11 months ago
Just imagine: No useless feature, but three bugs less.

It's about time that Apple not only listed new features, but also provided proof of their work. When I download updates from the App Store, it often says “Problem solved with XY”. Apple doesn't do that.
The question is, do they just do nothing or are they still too proud to admit that their software is completely buggy?
Score: 1 Votes (Like | Disagree)
strangeengine Avatar
12 months ago
The fact that Mail.app loses its place in the email list every time you switch mailboxes may lead me to violence. Hopefully this is fixed too.
Score: 1 Votes (Like | Disagree)