Apple Seeds Sixth Developer Beta of macOS Sequoia 15.1 [Update: Public Beta Available]

Apple today provided developers with the sixth beta of an upcoming macOS Sequoia 15.1 beta, with the new update coming two weeks after Apple released the fifth 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 Roundup: macOS Sequoia
Related Forum: macOS Sequoia

Popular Stories

iPhone 17 Pro 3 4ths Perspective Aluminum Camera Module 1

New iPhone 17 Pro Details: Brighter Display, Best Battery Life, and More

Wednesday September 3, 2025 5:33 am PDT by
Apple's iPhone 17 Pro and iPhone 17 Pro Max models will feature a number of significant display, thermal, and battery improvements, according to new late-stage rumors. According to the Weibo leaker known as "Instant Digital," the iPhone 17 Pro models will feature displays with higher brightness, making it more suitable for use in direct sunlight for prolonged periods. The iPhone 16 Pro and...
iPhone 17 Pro Iridescent Feature 2

iPhone 17 Pro Clear Case Leak Reveals Three Key Changes

Sunday August 31, 2025 1:26 pm PDT by
Apple is expected to unveil the iPhone 17 series on Tuesday, September 9, and last-minute rumors about the devices continue to surface. The latest info comes from a leaker known as Majin Bu, who has shared alleged images of Apple's Clear Case for the iPhone 17 Pro and Pro Max, or at least replicas. Image Credit: @MajinBuOfficial The images show three alleged changes compared to Apple's iP...
iphone 16 pro ghost hand

iPhone 17 Pro: 5 Reasons Not to Upgrade This Year

Monday September 1, 2025 4:35 am PDT by
Apple will launch its new iPhone 17 series this month, and the iPhone 17 Pro models are expected to get a new design for the rear casing and the camera area. But more significant changes to the lineup are not expected until next year, when the iPhone 18 models arrive. If you're thinking of trading in your iPhone for this year's latest, consider the following features rumored to be coming to...
iPhone 17 Pro Iridescent Feature 2

iPhone 17 and iPhone 17 Pro Prices Estimated Ahead of Apple Event Next Week

Tuesday September 2, 2025 1:50 pm PDT by
Just one week before Apple is expected to unveil the iPhone 17 series, an analyst has shared new price estimates for the devices. Here are J.P. Morgan analyst Samik Chatterjee's price estimates for the iPhone 17 series in the United States, according to 9to5Mac: Model Starting Price Model Starting Price Change iPhone 16 $799 iPhone 17 ...
iPhone 17 Pro Dark Blue and Orange

iPhone 17 Release Date, Pre-Orders, and What to Expect

Thursday August 28, 2025 4:08 am PDT by
An iPhone 17 announcement is a dead cert for September 2025 – Apple has already sent out invites for an "Awe dropping" event on Tuesday, September 9 at the Apple Park campus in Cupertino, California. The timing follows Apple's trend of introducing new iPhone models annually in the fall. At the event, Apple is expected to unveil its new-generation iPhone 17, an all-new ultra-thin iPhone 17...
iOS 18 on iPhone Arrow Down

Apple Preparing iOS 18.7 for iPhones as iOS 26 Release Date Nears

Sunday August 31, 2025 4:35 pm PDT by
Apple is preparing to release iOS 18.7 for compatible iPhone models, according to evidence of the update in the MacRumors visitor logs. We expect iOS 18.7 to be released in September, alongside iOS 26. The update will likely include fixes for security vulnerabilities, but little else. iOS 18.7 will be one of the final updates ever released for the iPhone XS, iPhone XS Max, and iPhone XR,...
iPhone 17 Pro on Desk Centered 1

Survey: Nearly 70% of Users Plan to Upgrade to iPhone 17

Monday September 1, 2025 8:24 am PDT by
A new survey has found that nearly seven in ten iPhone owners in the United States plan to upgrade to an iPhone 17 model, signaling strong demand ahead of Apple's expected unveiling of the devices at its September 9 keynote. Smartphone price comparison platform SellCell surveyed over 2,000 U.S.-based iPhone users in August to assess upgrade interest and brand loyalty before Apple's event....

Top Rated Comments

Realityck Avatar
12 months ago
Comparison of MacOS 15.1 Beta 6 to previous MacOS 15.1 Beta 5

macOS 15.1 Beta 6 (24B5070a)

* Safari Version 18.1 (20619.2.8.11.4)
* System Firmware Version: 11881.41.3 (M1 based Macs)
* Darwin Kernel Version 24.1.0: Mon Sep 30 00:07:39 PDT 2024; root:xnu-11215.40.63~39/RELEASE_ARM64_T8103 arm64

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

Apple Music/TV is now 1.5.1.24 was 1.5.1.18
Score: 7 Votes (Like | Disagree)
nortonandreev Avatar
12 months ago
Now the 2-hour wait for the OTA to appear…
Score: 3 Votes (Like | Disagree)
winxmac Avatar
12 months ago
Releases:

iOS 18.1 beta 6 (22B5069a)
iPadOS 18.1 beta 6 (22B5069a)
macOS 15.1 beta 6 (24B5070a)
tvOS 18.1 beta 4 (22J5567a)
visionOS 2.1 beta 4 (22N5567a)
watchOS 11.1 beta 4 (22R5569a)

Source ('https://developer.apple.com/news/releases/')
Score: 3 Votes (Like | Disagree)
DICK_CHENEY Avatar
12 months ago
Maybe this will finally fix all the borked VPN and security software issues.
Score: 2 Votes (Like | Disagree)
Nermal Avatar
11 months ago

Do you have any solution to this problem?
I've created a dedicated thread for this issue, although no solutions yet.
Score: 2 Votes (Like | Disagree)
Realityck Avatar
12 months ago
[SPOILER="macOS Sequoia 15.1 Beta 6 Release Notes"]
[HEADING=2]AppKit ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#AppKit')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Resolved an issue where menu item keyboard shortcuts in the Services menu would take precedence over shortcuts for application menu items. (134539327)

[HEADING=2]Carbon ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Carbon')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Resolved an issue where iBooks Author quits unexpectedly when clicking Charts or Widgets in the toolbar. (134693081)

[HEADING=2]DataDetection ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#DataDetection')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Resolved an issue where iPhone and iPad apps on Apple Silicon Macs might quit unexpectedly if DataDetection API is used. (128080892)

[HEADING=2]Messages ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Messages')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Fixed an issue preventing iMessage and other third-party notifications from being received while your device is connected on a VPN. (136775545)

[HEADING=2]Mobile Device Management ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Mobile-Device-Management')[/HEADING]
[HEADING=3]New Features ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#New-Features')[/HEADING]

* MDM profiles can use the new key ‘forceBypassScreenCaptureAlert’, which allows owners of managed devices to opt out of user notifications for content capture technologies. (131327961)

[HEADING=2]Quick Look ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Quick-Look')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Fixed: Back-deploying apps that link QuickLookUI to macOS 11 or earlier might crash. (133213738) (FB14667312)

[HEADING=2]ScreenCaptureKit ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#ScreenCaptureKit')[/HEADING]
[HEADING=3]New Features ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#New-Features')[/HEADING]

* Applications using our deprecated content capture technologies now have enhanced user awareness policies. Users will see fewer dialogs if they regularly use apps in which they have already acknowledged and accepted the risks. (133431080)

[HEADING=2]Siri ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Siri')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Fixed: Some of the buttons on the macOS Siri snippets might be unresponsive when using Siri through Voice. (133194038)

[HEADING=2]StoreKit ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#StoreKit')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Fixed: In StoreKit Testing in Xcode, the offer identifier in the subscription renewal info might be reported incorrectly for offer codes. (133774710)

[HEADING=2]Swift Charts ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Swift-Charts')[/HEADING]
[HEADING=3]Known Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Known-Issues')[/HEADING]

* Any project that utilizes Swift Charts fails to build when targeting iOS, macOS, or visionOS. (135905498)

[HEADING=2]SwiftUI ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#SwiftUI')[/HEADING]
[HEADING=3]Known Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Known-Issues')[/HEADING]

* macOS apps might crash with an exception related to duplicate toolbar items. This often happens when either (A) NavigationSplitViews are nested or (B) toolbars with ids are specified (View.toolbar(id:...)) and a new window is created with the same identified toolbar. (134589426)
Workaround: (A) Use apply .toolbar(removing: .sidebarToggle) within the sidebar column of the inner NavigationSplitView. (B) Temporarily stop using identified toolbars until this issue is addressed. Alternatively, sometimes it might be possible to workaround (B) by moving toolbar items around or rendering them after a short delay.
* Using if #available in @WidgetBundleBuilder and @SceneBuilder crashes on prior OS versions due to “unknown OS version.” (136098106)
Workaround: Disable @WidgetBundleBuilder and @SceneBuilder by using explicit return for if #available checks. For example:
var body: some Widget {
if #available(iOSApplicationExtension 18.0, *) {
return iOS18Widgets
} else {
return existingWidgets
}
}

@available(iOSApplicationExtension 18.0, *)
@WidgetBundleBuilder
var iOS18Widgets: some Widget {
MyNewWidget1()
MyNewWidget2()

existingWidgets
}

@WidgetBundleBuilder
var existingWidgets: some Widget {
MyOldWidgetX()
MyOldWidgetY()
}


[HEADING=2]System Integrity Protection ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#System-Integrity-Protection')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Fixed: Users might be incorrectly prompted when an app that is distributed through TestFlight attempts to access an application group container. (131606564) (FB14288230)

[HEADING=2]UIKit ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#UIKit')[/HEADING]
[HEADING=3]Resolved Issues ('https://developer.apple.com/documentation/macos-release-notes/macos-15_1-release-notes#Resolved-Issues')[/HEADING]

* Resolved an issue where iPhone and iPad apps on Apple Silicon Macs quit unexpectedly when loading UIReferenceLibraryViewController. (79135995) (FB9153775)

[/SPOILER]
Score: 1 Votes (Like | Disagree)