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Apple Seeds First Beta of macOS Sequoia 15.4

okay cool but like... are there any updates inside the system at all? or we just now update it for the sake of new macOS number? test it for 2 months to see if 18.4 is displayed correctly in the "about" section
 
Steve01234 said:
Broke Presonous TB3 audio driver... again :(
Click to expand...

Most people don't come to this thread, when a new beta update/version is out.


New bugs or fixes can even be entered by yourself in the first post. But it's always better to check if you are not the only one with this problem, by posting it before.

There is also one for the latest non-beta and the little things thread for macOS 15 in general.

Screenshot 2025-02-22 at 02.16.47.png
 
Comparison of MacOS 15.4 beta to previous MacOS 15.3.1 beta

macOS 15.4 beta (24E5206s)
  • Safari Version 18.4 (20621.1.10.21.6)
  • System Firmware Version: 1881.100.964.0.1 (AS based Macs)
  • Darwin Kernel Version 24.4.0: Sat Feb 15 22:50:56 PST 2025; root:xnu-11417.100.533.501.4~3/RELEASE_ARM64_T6041 arm64
macOS 15.3.1 (24D70s)
  • Safari Version 15.3.1 (20620.2.4.11.5)
  • System Firmware Version: 11881.81.4 (AS based Macs)
  • Darwin Kernel Version 24.3.0: Thu Jan 2 20:24:22 PST 2025; root:xnu-11215.81.4~3/RELEASE_ARM64_T6041 arm64
Apple Music/TV is now 1.5.4.43 was 1.5.2.56
 
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artjart said:
okay cool but like... are there any updates inside the system at all? or we just now update it for the sake of new macOS number? test it for 2 months to see if 18.4 is displayed correctly in the "about" section
Click to expand...
The whole way it updated on MacOS took way longer this install. The download was as I recall 16 GB and prep took twice as long. Been running it for hours.


Overview​

The macOS 15.4 SDK provides support to develop apps for Mac computers running Sequoia 15.4 beta. The SDK comes bundled with Xcode 16.3, available from the Mac App Store. For information on the compatibility requirements for Xcode 16.3, see Xcode 16.3 Release Notes.

Apple Intelligence​

Known Issues​

  • After restoring macOS 15.4, some Apple Intelligence features might not be available or you might see “Downloading support…”. (145297891)
    Workaround: Restarting your device might resolve the issue.

FSKit​

New Features​

  • FSKit is now available, enabling delivery of user space file systems as Application Extensions. These file systems support integration with DiskArbitration. (44900760)

Game Controller​

Resolved Issues​

  • Fixed: Game controllers might stop responding when accessibility features, such as Voice Over, are enabled. (141497799)

libxml2​

Deprecations​

  • The custom allocation API for libxml2 is deprecated starting in macOS Sequoia 15.4, iOS 18.4, tvOS 18.4, visionOS 2.4, and tvOS 18.4. If this API is not used, no changes are required. If this API is currently used, make changes to call malloc() instead of xmlMalloc() or xmlMallocAtomic(); call realloc() instead of xmlRealloc(); call free()instead of xmlFree() and call strdup() instead of xmlMemStrdup(). Stop calling xmlMemSetup(), xmlMemGet(), xmlGcMemSetup() and xmlGcMemGet() to set custom allocation functions. Do not set global variables xmlMalloc, xmlMallocAtomic, xmlRealloc, xmlFree, and xmlMemStrdup. Internally, libxml2 and libxslt will now use the system allocator instead of this API, so do not rely on these libraries using the custom allocation API. (138404994)

Podcasts​

New Features​

  • Podcasts Search provides suggestions as you type to help you find what you’re looking for. (144169175)

SCSIControllerDriverKit​

New Features​

  • Four new API’s have been introduced: UserMapBundledParallelTaskCommandAndResponseBuffers, BundledParallelTaskCompletion, UserProcessBundledParallelTasks and UserCompleteBundledParallelTask.
    These APIs introduce the concepts of bundled I/Os and shared memory, for parallel task command and response buffers.
    The shared memory addresses the RPC copy overhead. Bundled I/O enables the exchange of multiple I/Os in a single API call (in both submission and completion path), instead of handing over one I/O at a time between DriverKit and DriverExtension. This helps mitigate the DriverKit latencies while interacting with DriverExtension.
    The IOUserSCSIParallelInterfaceController.iig file explains the concepts of I/O bundling and shared memory for parallel task and response buffers.
    If DriverExtension has considerably lower I/O performance compared to the KernelExtension for workloads with high queue depths or very small I/O sizes (i.e. 4KB), try using these new APIs. (134516478)

StoreKit​

New Features​

  • New StoreKit APIs support Advanced Commerce API in-app purchases. (118528943)
  • By using the new purchase option API introductoryOfferEligibility(compactJWS:), you can now set a preference for whether an introductory offer should be redeemed during a purchase. This API requires you to sign a payload on your server in order to either apply the offer (even if the customer is not eligible) or block it. (136152740)
  • New properties appTransactionID, originalPlatform, and period are now available in AppTransaction, Transaction, Transaction.Offer, and Product.SubscriptionInfo.RenewalInfo. (136395697)

Deprecations​

  • Transaction.currentEntitlement(for:) is now deprecated. This API returns the latest transaction that entitles the user to a product, which may not include transactions originated for family shared subscriptions. Use the Transaction.currentEntitlements(for:) method to get all the transactions that entitle the user to a product. (138320205)

SwiftUI​

Resolved Issues​

  • Fixed: A color set by the tint(_:) modifier does not override the tint color of buttons in that view’s confirmation dialogs and alerts. (138774306)
  • Fixed: For apps compiled against iOS 18.4 beta, applying defaultVisibility(.hidden) to customizable toolbar items does not hide the item by default on iOS. (139815290)
  • Fixed: When NavigationStack or NavigationSplitView content updates, the environment is not invalidated unless properties in the environment have changed. (139855826)

Known Issues​

  • On macOS, .sheet, .alert and .confirmationDialog modals conditionally allow app termination (via the menu item, ⌘Q, Software Update, etc.) in some configurations. (141551605)
    Workaround: For macOS 15.4 beta, modals listed above will allow app quit while presented under specific conditions. If you strictly need to block app quit in macOS 15.4 beta, you can temporarily mark the dialog as critical with dialogSeverity, ensure the sheet toolbar has > 1 button (or no buttons with .confirmationAction or cancellationAction placements), or ensure the dialog has > 1 action button in it.

System Calls​

New Features​

  • fileport_makeport(2) and fileport_makefd(2) are now APIs with manual pages. (66571768) (FB8270900)

UIWritingToolsCoordinator​

Known Issues​

  • In macOS 15.4 beta, NSWritingToolsCoordinatorDelegate method -writingToolsCoordinator:requestsRangeInContextWithIdentifierForPoint:completion: is marked as optional and will not be called. (142681236)
    Workaround: When building on macOS 15.4 beta and deploying to macOS 15.2, implement the deprecated NSWritingToolsCoordinatorDelegate method -writingToolsCoordinator:requestsRangeInContextWithIdentifierForPoint:completion:. If you are not deploying earlier than macOS 15.4, do not implement this method.

URLSession​

New Features​

  • To enable the new HTTP loading mode, set usesClassicLoadingModeto false on URLSessionConfiguration. The new loading mode will become the default in a future release. (89390075)

Writing Tools​

Known Issues​

  • After generating a list, key point, table, or summary in the pop-over, selecting “Replace” results in an error message. (145186545)
    Workaround: The generated content can be copied and pasted. User can manually replace the selected text with the generated text.
 
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there are new rcs for ventura and sonoma as well

macOS 13.7.5 rc 1 build 22H510

macOS 14.7.5 rc 1 build 23H510
 
That’s great but can we please have the M4 MBA released so I can use some of these new features.
 
Ramsteiner said:
No play machine. M4 Mini Pro. Hopefully they will have it sorted out in the next beta. Just going to have to wait a couple of weeks.
Click to expand...
Just install again, it’s all ready downloaded, authentication again, allow to install again, might seem like it stops but allow it continue until it’s completed and can’t do anything more.
 
And still no iPhone Mirroring in the EU. Apple also completely erased it from the German Sequoia features website… I guess we still won’t get this any time soon. :confused:
 
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