Apple Seeds Fifth Developer Beta of macOS Sequoia 15.1 - MacRumors
Skip to Content

Apple Seeds Fifth Developer Beta of macOS Sequoia 15.1

Apple today provided developers with the fifth beta of an upcoming macOS Sequoia 15.1 beta, with the new update coming a week after Apple released the fourth beta.

macOS Sequoia 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 15.1 introduces the first Apple Intelligence features, adding support for Writing Tools, new Siri features, Smart Replies in Mail and Messages, Priority messages in the Mail app, Memory Movie and Clean Up in Photos, and more.

The update does not include Image Playground, Genmoji, or more advanced ‌Siri‌ functionality.

Using Apple Intelligence features requires a Mac that has an Apple silicon chip.

Related Forum: macOS Sequoia

Popular Stories

Surprise and Shine Live Coverage Article

Apple Event Live Blog: iPhone Duo, iPhone 18 Pro, and More Expected

Wednesday September 9, 2026 9:10 am PDT by
Apple's "Surprise and Shine" event kicks off today at 10:00 a.m. Pacific Time, where we're expecting to see the foldable iPhone Duo, the iPhone 18 Pro and Pro Max, Apple Watch Series 12 and Ultra 4 models, new AirPods 5 earphones, and perhaps some other announcements. Apple is providing a live video stream on its website, on YouTube, and in the company's TV app across various platforms. We...
apple surprise and shine event

Apple Event Today: iPhone 18 Pro and iPhone Duo Cheat Sheet

Tuesday September 8, 2026 10:24 am PDT by
Apple's biggest event of the year is almost here, and all eyes are on Cupertino. With the first foldable iPhone expected to headline Apple's "Surprise and Shine" event on Wednesday, September 9, at 10:00 a.m. Pacific Time, the rumor mill has been running full throttle, fuelled by the biggest single design change in the life of the iPhone. To get you up to speed, here's a quick reference...
iphone duo

Apple Announces Foldable 'iPhone Duo'

Wednesday September 9, 2026 10:56 am PDT by
Apple today announced the "iPhone Duo," a new kind of iPhone featuring two screens and a foldable inner display. The two halves of the iPhone Duo connect into a single continuous frame with the same aspect ratio across both displays, and Apple said the transition between open and closed is designed to feel fluid. When fully open, Apple says it is the thinnest iPhone ever made, with an...

Top Rated Comments

HobeSoundDarryl Avatar
26 months ago
Looking forward to installing 15.4 or 15.5 around WWDC time, after all these bugs are somewhat worked out... and early adopters have found workarounds for those still lingering. Anyone missing "just works" Apple? I recall the "good old days" where one could wait for .2-.3 and have a pretty stable macOS.
Score: 7 Votes (Like | Disagree)
26 months ago

Looking forward to installing 15.4 or 15.5 around WWDC time, after all these bugs are somewhat worked out... and early adopters have found workarounds for those still lingering. Anyone missing "just works" Apple? I recall the "good old days" where one could wait for .2-.3 and have a pretty stable macOS.
I’m still experiencing the “good old days” of it just works. I roundly reject the idea that Apple’s QA isn’t what it used to be. If anything it’s much better. That argument is pure FUD and I’ve been using Apple gear exclusively since 1982. I've been through it all in the last 40 years. It’s better today, no question.
Score: 5 Votes (Like | Disagree)
Realityck Avatar
26 months ago
Comparison of MacOS 15.1 Beta 5 to previous MacOS 15.1 Beta 4

macOS 15.1 Beta 5 (24B5055e)

* Safari Version 18.1 (20619.2.5.11.2)
* System Firmware Version: 11881.40.153 (M1 based Macs)
* Darwin Kernel Version 24.1.0: Tue Sep 17 07:48:19 PDT 2024; root:xnu-11215.40.59~38/RELEASE_ARM64_T8103 arm64

macOS 15.1 Beta 4 (24B5046f)

* Safari Version 18.1 (20619.2.3.1)
* System Firmware Version: 11881.40.128 (M1 based Macs)
* Darwin Kernel Version 24.1.0: Mon Sep 2 19:59:57 PDT 2024; root:xnu-11215.40.48~33/RELEASE_ARM64_T8103 arm64

Apple Music/TV is now 1.5.1.18 was 1.5.1.10
Score: 4 Votes (Like | Disagree)
26 months ago
Sequoia broke screen sharing. If Apple cannot make work what has worked for 15 years then I do not have a lot of hope for Apple Intelligence. macOS 15 struck me as a beta, really awful.
Score: 4 Votes (Like | Disagree)
Realityck Avatar
26 months ago
Apparently wanted to have beta 5 get back on the Monday track after the much delayed beta 4 (20 days)

to devs

* iOS 18.1 beta 5 (22B5054e) - September 23, 2024
* iPadOS 18.1 beta 5 (22B5054e) - September 23, 2024
* macOS 15.1 beta 5 (24B5055e) - September 23, 2024
* tvOS 18.1 beta 2(22J5552d) - September 23, 2024
* watchOS 11.1 beta 2 (22R5554e) - September 23, 2024
* visionOS 2.1 beta 2 (22N5553d) - September 23, 2024
Score: 4 Votes (Like | Disagree)
26 months ago

The download last Monday that updated Sonoma to Sequoia seems more like beta software that non-beta. Apple rushed it out the door.
Not at all. Apple explained precisely the roadmap for upcoming features. The negativity is misplaced entirely.
Score: 3 Votes (Like | Disagree)