What's new in macOS 27.2 beta (26B5086k) · Mac17,9

Previous releasemacOS 27.0.126A434Mac17,9 · Released on Sep 28, 2026

This releasemacOS 27.2 beta26B5086kMac17,9 · Released on Sep 16, 2026

Compared sources8app_os, dyld_cache, exclave_cache, exclave_os, filesystem, kernelcache, rosetta_os, system_os

New and removed binaries

By firmware source. Only sources both builds index completely are compared.

59 added · 22 removed

Source	Change	Logical path	Size	Records
dyld_cache	Added	/System/Library/Frameworks/FoundationModelsCore.framework/Versions/A/FoundationModelsCore	32.5 KiB	26
dyld_cache	Added	/System/Library/Previews/ShellPluginsMac/WidgetPreviewsShellPlugin.bundle/Contents/MacOS/WidgetPreviewsShellPlugin	217.6 KiB	393
dyld_cache	Added	/System/Library/PrivateFrameworks/ASRKit.framework/Versions/A/ASRKit	88.3 KiB	172
dyld_cache	Added	/System/Library/PrivateFrameworks/AgentCanvasModel.framework/Versions/A/AgentCanvasModel	1.1 MiB	3,217
dyld_cache	Added	/System/Library/PrivateFrameworks/AgenticFeedbackCore.framework/Versions/A/AgenticFeedbackCore	245.2 KiB	812
dyld_cache	Removed	/System/Library/PrivateFrameworks/GPUInfo.framework/Versions/A/GPUInfo	171.3 KiB	205
dyld_cache	Removed	/System/Library/PrivateFrameworks/ODDAnalytics.framework/Versions/A/ODDAnalytics	159.7 KiB	296
dyld_cache	Removed	/System/Library/PrivateFrameworks/SocialUI.framework/Versions/A/SocialUI	1015.9 KiB	7,778
exclave_cache	Added	/System/ExclaveKit/System/Library/PrivateFrameworks/SiriRaiseToSpeakExclave.framework/SiriRaiseToSpeakExclave	90.8 KiB	146
exclave_cache	Added	/System/ExclaveKit/System/Library/PrivateFrameworks/SiriRaiseToSpeakExclaveDebug.framework/SiriRaiseToSpeakExclaveDebug	131.6 KiB	251
filesystem	Added	/System/Applications/Podcasts.app/Contents/Frameworks/JetIncubation.framework/Versions/A/JetIncubation	271.0 KiB	526
filesystem	Added	/System/Applications/Podcasts.app/Contents/Frameworks/PodcastsLogging.framework/Versions/A/PodcastsLogging	164.6 KiB	83
filesystem	Added	/System/Library/CoreServices/PreloginSystemBannerRenderer.app/Contents/MacOS/PreloginSystemBannerRenderer	266.2 KiB	889
filesystem	Added	/System/Library/DistributedEvaluation/Plugins/DictationPersonalizationFides2Plugin.desPlugin/Contents/MacOS/DictationPersonalizationFides2Plugin	282.1 KiB	501
filesystem	Added	/System/Library/DistributedEvaluation/Plugins/GlobalNNLMFidesPlugin.desPlugin/Contents/MacOS/GlobalNNLMFidesPlugin	211.7 KiB	200
filesystem	Removed	/System/Library/CoreServices/UAUPlugins/SystemSettingsUserAccountUpdater.bundle/Contents/Resources/settings	746.3 KiB	1,080
filesystem	Removed	/System/Library/ExtensionKit/Extensions/AssetMetricsExtension.appex/Contents/MacOS/AssetMetricsExtension	327.3 KiB	443
filesystem	Removed	/System/Library/ExtensionKit/Extensions/ODDIPoirotExperimentationExtension.appex/Contents/MacOS/ODDIPoirotExperimentationExtension	313.1 KiB	372
filesystem	Removed	/System/Library/ExtensionKit/Extensions/ODDIPoirotMetricsExtension.appex/Contents/MacOS/ODDIPoirotMetricsExtension	314.0 KiB	392
filesystem	Removed	/System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/XPCServices/AppleSTDP2700BootstrapService.xpc/Contents/MacOS/AppleSTDP2700BootstrapService	192.4 KiB	361
rosetta_os	Added	/System/x86Support/System/x86Support/System/Library/Frameworks/InputMethodKit.framework/Versions/A/InputMethodKit_x86Support	48.6 KiB	366
rosetta_os	Removed	/System/Library/Frameworks/GameKit.framework/Versions/A/GameKit_x86Support	348.4 KiB	1,411
rosetta_os	Removed	/System/Library/Frameworks/Quartz.framework/Versions/A/Quartz_x86Support	22.1 KiB	13
rosetta_os	Removed	/System/Library/PrivateFrameworks/GameCenterUI.framework/Versions/A/GameCenterUI_x86Support	223.3 KiB	1,758
system_os	Added	/System/Library/PrivateFrameworks/ProcessorTrace.framework/Versions/A/ProcessorTrace	225.1 KiB	1,065
system_os	Removed	/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit_x86Support	47.4 MiB	230,542
system_os	Removed	/System/Library/Frameworks/CoreSpotlight.framework/Versions/A/CoreSpotlight_x86Support	4.8 MiB	30,471
system_os	Removed	/System/Library/Frameworks/GameKit.framework/Versions/A/GameKit_x86Support	465.1 KiB	1,418
system_os	Removed	/System/Library/Frameworks/Quartz.framework/Versions/A/Quartz_x86Support	34.1 KiB	13
system_os	Removed	/System/Library/PrivateFrameworks/GameCenterFoundation.framework/Versions/A/GameCenterFoundation_x86Support	3.5 MiB	23,151

All 23 binaries added to dyld_cache All 32 binaries added to filesystem All 9 binaries removed from filesystem All 7 binaries removed from system_os

New frameworks and dylibs

Added framework binaries and dynamic libraries.

24 frameworks · 2 dylibs

Frameworks

Every binary added inside a framework

Dylibs

/usr/lib/libfabric.dylib dyld_cache
/usr/lib/objc/libobjcMsgSend35.dylib dyld_cache

Entitlement keys

Top-level keys no binary held before, and keys no binary holds any more. Compare entitlements

35 new · 4 removed

New keys

com.apple.AXMediaUtilitiesService-access 2 holders
com.apple.TVRemoteCore 1 holder
com.apple.appleaccount.transparency.metadata 1 holder
com.apple.authkit.deviceList 1 holder
com.apple.businessservicesd.brandLogo 1 holder
com.apple.developer.conversation-accessibility 2 holders
com.apple.developer.lockdown-mode.state 1 holder
com.apple.fileprovider.fpck-service 1 holder
com.apple.fileprovider.iwork-collaboration-messaging 1 holder
com.apple.icloud.searchpartyd.beaconmanager.simplebeacon 1 holder
com.apple.private.airdrop.client 3 holders
com.apple.private.audio.driver.extrinsic.registration 3 holders
com.apple.private.audio.self-manages-sensor 1 holder
com.apple.private.copresence.unaliased-identifiers 1 holder
com.apple.private.darwin-notification.restrict-post.AirPlay.DACP.mutetoggle 2 holders
com.apple.private.darwin-notification.restrict-post.AirPlay.DACP.volumedown 2 holders
com.apple.private.darwin-notification.restrict-post.AirPlay.DACP.volumeup 2 holders
com.apple.private.ids.region-store 1 holder
com.apple.private.managedclient.certpayloadrecovery 1 holder
com.apple.private.menubar.allow-scene-override-associated-apps 1 holder
com.apple.private.menubar.campo-takeover 1 holder
com.apple.private.remotemanagement.settings 1 holder
com.apple.private.security.files.bookmarks.manage-revocable 1 holder
com.apple.private.siri.invoke.text 1 holder
com.apple.private.tvremote.findmy 1 holder

All 35 new keys

Removed keys

com.apple.private.apfs.lock-container-load 3 holders before
com.apple.private.security.signal-exempt.xxx 1 holder before
com.apple.private.speechtranslation.serverhost 1 holder before
com.apple.private.tcc.manager.read.access 1 holder before

New Objective-C classes

The binaries gaining the most classes, compared exactly. Every binary whose classes changed

537 binaries changed

Binary	New	Removed	Classes
dyld_cache /System/Library/PrivateFrameworks/SiriInstrumentation.framework/Versions/A/SiriInstrumentation	59	0	`CHSchemaCHAgenticGradingInferenceGeneratedCHSchemaCHGraderResultCHSchemaCHSpeechCriterionResultCHSchemaCHSpeechGradingInferenceMetadataCPRSchemaCPRActiveRuntimeSwitchAttemptedCPRSchemaCPRArchitectureUsedExecutorSiriSchemaExecutorInjectableContentClassifierCallCanceledExecutorSiriSchemaExecutorInjectableContentClassifierCallContextExecutorSiriSchemaExecutorInjectableContentClassifierCallEndedExecutorSiriSchemaExecutorInjectableContentClassifierCallFailedExecutorSiriSchemaExecutorInjectableContentClassifierCallStartedIDENTITYSchemaIDENTITYSpeakerIdResultReceived`59 in all
dyld_cache /System/Library/PrivateFrameworks/SiriInstrumentationEx.framework/Versions/A/SiriInstrumentationEx	59	0	`CHSchemaCHAgenticGradingInferenceGeneratedCHSchemaCHGraderResultCHSchemaCHSpeechCriterionResultCHSchemaCHSpeechGradingInferenceMetadataCPRSchemaCPRActiveRuntimeSwitchAttemptedCPRSchemaCPRArchitectureUsedExecutorSiriSchemaExecutorInjectableContentClassifierCallCanceledExecutorSiriSchemaExecutorInjectableContentClassifierCallContextExecutorSiriSchemaExecutorInjectableContentClassifierCallEndedExecutorSiriSchemaExecutorInjectableContentClassifierCallFailedExecutorSiriSchemaExecutorInjectableContentClassifierCallStartedIDENTITYSchemaIDENTITYSpeakerIdResultReceived`59 in all
dyld_cache /System/Library/PrivateFrameworks/HealthDaemon.framework/Versions/A/HealthDaemon	61	6	`HDBodyMetricsPruningPredicateProviderHDCodableBilateralQuantitySampleHDCodableClinicalHealthLinkHDCodableHealthFactBooleanSampleHDCodableHealthFactConceptSampleHDCodableHealthFactQuantitySampleHDCodableHealthFactSampleHDCodableHealthReportStateHDCodableLaboratoryAppointmentHDCodableLaboratoryDemographicsHDCodableLaboratoryOrderHDCodableMedicalHistoryAllergyRecord`61 in all
dyld_cache /System/Library/PrivateFrameworks/AgentSessionKitRuntime.framework/Versions/A/AgentSessionKitRuntime	42	1	`AgentSessionKitRuntime.SchemaV28.ArtifactEntityAgentSessionKitRuntime.SchemaV28.SyncTimestampEntityAgentSessionKitRuntime.SchemaV28.AgentProvenanceEntityAgentSessionKitRuntime.SchemaV28.AgentSessionEventEntityAgentSessionKitRuntime.SchemaV28.PendingSyncRecordEntityAgentSessionKitRuntime.SchemaV28.AgentSessionRecordEntityAgentSessionKitRuntime.SchemaV28.SessionSafetyStateEntityAgentSessionKitRuntime.SchemaV28.SessionSyncMetadataEntityAgentSessionKitRuntime.SchemaV28.CascadeDonationStateEntityAgentSessionKitRuntime.SchemaV28.CloudKitSyncEngineStateEntityAgentSessionKitRuntime.SchemaV29.ArtifactEntityAgentSessionKitRuntime.SchemaV29.SyncTimestampEntity`42 in all
dyld_cache /System/Library/Frameworks/HealthKit.framework/Versions/A/HealthKit	44	6	`HKBilateralQuantitySampleHKBilateralQuantityTypeHKCardioFitnessLegacyClassificationTableHKCardioFitnessThresholdCoefficientRowHKCardioFitnessThresholdModelSourceHKCardioFitnessThresholdsHKDataTypeAccessReportHKDataTypeAccessReportEntryHKDataTypeAccessStoreHKEthnicityObjectHKFeatureAvailabilityRequirementAgeIsPresentHKFeatureAvailabilityRequirementHeightIsPresent`44 in all
dyld_cache /System/Library/PrivateFrameworks/SiriProcessing.framework/Versions/A/SiriProcessing New binary	38	0	`SiriProcessing.TailToOSLogSiriProcessing.PreprocessorSiriProcessing.PackagingQueueSiriProcessing.CompositionRootSiriProcessing.ServiceRegistrySiriProcessing.StagingPoolHostSiriProcessing.RawUnifiedStreamSiriProcessing.SandboxExtensionSiriProcessing.DirectUploadTopicSiriProcessing.MetadataExtractorSiriProcessing.PersistentStorageSiriProcessing.MessageStoreReader`38 in all
dyld_cache /System/Library/PrivateFrameworks/IntelligencePlatformLibrary.framework/Versions/A/IntelligencePlatformLibrary	36	0	`CCFitnessActivityRingsContentCCFitnessActivityRingsMetaContentCCFitnessMindfulSessionContentCCFitnessMindfulSessionMetaContentCCFitnessWorkoutContentCCFitnessWorkoutMetaContentCCGenerativeInsightAttributionCCHealthCategorySampleCCHealthCategorySampleContentCCHealthCategorySampleMetaContentCCHealthCharacteristicsCCHealthCharacteristicsContent`36 in all
dyld_cache /System/Library/PrivateFrameworks/HomeKitDaemon.framework/Versions/A/HomeKitDaemon	37	9	`HMDClimateBulletinHMDCloud_ZonePullLoopLogEventHMDCoreDataObjectChangeLogEventHMDHAPAccessoryLocalNotifyUpdateHMDHAPAccessoryLocalNotifyUpdateManagerHMDHAPAccessoryLocalNotifyUpdateManagerDefaultSourceHMDMediaGroupDestinationManagerHMDMediaGroupsAggregateDataGeneratorDataHMDNetworkCommissioningLogEventHMDNetworkCommissioningLogEventDataSourceHMDNetworkCommissioningLogEventStateManagerHMDNetworkInformationSnapshot`37 in all

Sandbox operations and profiles

Operations the sandbox checks and the compiled profiles it ships. Compare sandbox records

1 binary changed

Binary	Collection	Changes
kernelcache com.apple.security.sandbox	Sandbox profiles	7 updated`collectioncollection/com.apple.corebrightnessdcollection/com.apple.dextcollection/com.apple.endpointsecurity.endpointsecuritydcollection/com.apple.sandboxdplatformplatform/platform`

Largest API-surface changes

Binaries whose exported interface changed, by record delta. Every API-surface change

9,965 binaries

Binary	Records	Changed collections
filesystem /System/Library/PrivateFrameworks/CoreMLOdie.framework/Versions/A/XPCServices/E5MLCompiler.xpc/Contents/MacOS/E5MLCompiler	-43,644	Exports -24,091Chained imports -14,649C strings -4,687Undefined imports -213Sections -4Code identities changedLinked libraries changed
dyld_cache /System/Library/Frameworks/MediaToolbox.framework/Versions/A/MediaToolbox	+32,883	C strings +32,855Undefined imports +25Exports +2Objective-C methods +1Dylib identities changedLinked libraries changedObjective-C properties changedSections changed
dyld_cache /System/Library/PrivateFrameworks/CMCapture.framework/Versions/A/CMCapture	+12,606	C strings +12,070Objective-C methods +204Objective-C ivars +193Objective-C properties +81Undefined imports +51Objective-C classes +6Exports -3Objective-C protocol adoptions +2Objective-C protocols +1Sections +1Linked libraries changed
dyld_cache /System/Library/Frameworks/CoreMedia.framework/Versions/A/CoreMedia	+8,549	C strings +8,533Undefined imports +9Exports +7Dylib identities changedLinked libraries changedSections changed
dyld_cache /System/Library/Frameworks/VideoToolbox.framework/Versions/A/VideoToolbox	+8,462	C strings +8,447Undefined imports +9Objective-C ivars +6Dylib identities changedLinked libraries changedObjective-C methods changedSections changed
dyld_cache /System/Library/PrivateFrameworks/Bootability.framework/Versions/A/Frameworks/BootabilityBrain.framework/Versions/A/BootabilityBrain	-7,277	C strings -3,701Exports -3,563Undefined imports -13Linked libraries +1Objective-C methods -1Dylib identities changedSections changed
dyld_cache /System/Library/Frameworks/SwiftUICore.framework/Versions/A/SwiftUICore	-6,785	Exports -6,793C strings +5Undefined imports -5Objective-C classes +3Objective-C ivars +2Objective-C methods +2Objective-C properties +1Dylib identities changedLinked libraries changedSections changed
dyld_cache /System/Library/PrivateFrameworks/HybridSearch.framework/Versions/A/HybridSearch	+5,707	Exports +5,313C strings +407Objective-C methods -38Undefined imports +18Objective-C ivars +7Objective-C protocols -3Linked libraries +2Objective-C classes +1Objective-C protocol adoptions -1Sections +1Dylib identities changed
dyld_cache /System/Library/PrivateFrameworks/SiriInstrumentation.framework/Versions/A/SiriInstrumentation	+3,970	Objective-C methods +1,683Exports +969Objective-C properties +510C strings +395Objective-C ivars +350Objective-C classes +59Undefined imports +2Objective-C protocol adoptions +1Sections +1Linked libraries changed
dyld_cache /System/Library/PrivateFrameworks/IntelligenceFlowPlannerSupport.framework/Versions/A/IntelligenceFlowPlannerSupport	+3,365	Exports +2,727Undefined imports +383C strings +255Objective-C methods -20Objective-C ivars +11Objective-C classes +9Linked libraries +1Objective-C protocol adoptions -1Dylib identities changedObjective-C protocols changedSections changed