The Firebase Apple SDK (12.17.0) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• Fix absl::string_view nullptr crash and binary truncation in StringFormat by @cherylEnkidu in #16350
• [ML] Deprecate FirebaseMlModelDownloader by @paulb777 in #16357
• Add missing ABSL_CONST_INIT to variable definitions by @cherylEnkidu in #16355
• Fix StorageUploadTask cancel by @paulb777 in #16359
• refactor(misc): remove obsolete OS availability checks by @ncooke3 in #16313
• bound array access in StoragePath url parsers by @alhudz in #16243
• Changelog update for StoragePath fix by @paulb777 in #16379
• feat(firestore): add support for 16MB docs by @dlarocque in #16206
• reject path separators in fileExtensionForResponse by @isl-Ramzi in #16387
• Prevent crashes when parsing malformed bundle payloads by @cherylEnkidu in #16367
• refactor(appcheck): remove recaptcha fallback from default provider factory by @ncooke3 in #16388
• bound array access in ActionCodeURL query parser by @isl-Ramzi in #16382
• Fix simulator putfile posix error by @paulb777 in #16386
• [AI] Rename vertexAI to agentPlatform by @paulb777 in #16372
• [Storage,Functions] Fix credentials for emulator by @paulb777 in #16395
• [Auth] Fix OAuth string escaping logic by @paulb777 in #16394
• validate resource name format before PopFirst in bundle parsing by @alhudz in #16221
• refactor: remove site key from options; require explicit pass to recaptcha provider by @ncooke3 in #16409
• docs(analytics): explain the three SPM products by @tsushanth in #16249
• ignore non-text websocket frames in handleIncomingFrame by @isl-Ramzi in #16414
• fix surrogate pair replacement range in FNextPushId by @isl-Ramzi in #16415
• fix(RemoteConfig): prevent activate from hanging with named apps by @paulb777 in #16412
• fix(firebaseai): prevent stream leak on cancellation by @ncooke3 in #16393
• zero image details in FIRCLSBinaryImageFindImageForUUID by @isl-Ramzi in #16407
• refactor(inappmessaging): remove obsolete OS availability checks by @ncooke3 in #16336
• refactor(auth): remove obsolete OS availability checks by @ncooke3 in #16356
• refactor(storage): remove obsolete OS availability checks by @ncooke3 in #16417
• fix(RemoteConfig): prevent retain cycle in activateWithCompletion by @paulb777 in #16413
• fix: resolve concurrency resource leak in Functions stream cancellation by @ncooke3 in #16392
• refactor(messaging): remove obsolete OS availability checks by @ncooke3 in #16419
• Analytics 12.17.0 by @htcgh in #16427
• [AI] Mark speech output feature "public preview" by @milaGGL in #16432

New Contributors

• @alhudz made their first contribution in #16243
• @tsushanth made their first contribution in #16249

Full Changelog: 12.16.0...12.17.0

The Firebase Apple SDK (12.16.0) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• Update .spi.yml to build documentation by @Mcrich23 in #16281
• Revert "Make the Firestore nightly test optional (#16222)" by @wu-hui in #16283
• fix(perf): avoid unsafe NSProxy delegate ivar lookup by @aybarska in #16270
• test: Update expected image token count to match new backend values by @paulb777 in #16280
• docs(appcheck): update provider factory docs for new default by @ncooke3 in #16285
• fix(auth): migrate away from deprecated api by @daymxn in #16274
• chore: carthage artifacts for m182 by @ncooke3 in #16287
• Partial Revert "fix(auth): migrate away from deprecated api" by @ncooke3 in #16289
• fix(core): update error messages mentioning init usage by @daymxn in #16294
• Update versions for Release 12.16.0 by @ncooke3 in #16292
• fix doc link by @morganchen12 in #16290
• fix(firestore): fix var warning by @ncooke3 in #16295
• refactor(fcm): cleanup redundant availability checks in fcm test file by @ncooke3 in #16146
• feat(skills): add ios-simulator-test-recording skill for UI test walkthroughs by @ryanwilson in #16005
• Revise agents.md title and introduction by @ryanwilson in #16306
• refactor: clean up legacy Swift 5.x version checks by @ncooke3 in #16305
• Migrate Connectivity Monitoring to NWPathMonitor on Apple Platforms by @cherylEnkidu in #16112
• fix(ailogic): stream errors should not be ignored by @ncooke3 in #16298
• refactor(crashlytics): remove obsolete OS availability checks by @ncooke3 in #16309
• refactor(appcheck): remove obsolete OS availability checks by @ncooke3 in #16310
• test: Increase timeout in testListenForChildChangedWithLimitEnsureEventsFireProperly by @paulb777 in #16279
• fix(spm): allow googleappmeasurement patches by @ncooke3 in #16288
• chore(scripts): remove obsolete style script exclusions by @ncooke3 in #16314
• ci: Upgrade setup-ruby and retry actions to versions supporting Node.js 24 by @paulb777 in #16278
• chore(gemfile): concurrent-ruby >= 1.3.7 by @ncooke3 in #16316
• [Crashlytics] Fix deadlock in user logging on reentrant queue access. (#16163) by @JesusRojass in #16192
• fix(ailogic): fix concurrency warning in test mock type by @ncooke3 in #16315
• refactor(database): remove obsolete OS availability checks by @ncooke3 in #16317
• ci(workflows): add read permissions to github action workflows by @ncooke3 in #16321
• fix zizmor findings by @morganchen12 in #16296
• chore: update gems by @ncooke3 in #16320
• chore: update .github/actions/testing_report_generation gems by @ncooke3 in #16325
• [Infra] Fix danger workflow failure by @paulb777 in #16327
• [AI] Disable broken googleAI urlContext integration tests by @paulb777 in #16330
• [Perf] Fix memory gauge crash using task_info (#16121) by @JesusRojass in #16220
• [Firebase AI Logic] Fix GenerateContentResponse decode failure when citation endIndex is missing by @paulb777 in #16329
• cleanup(infra): refactor spec testing tooling by @ncooke3 in #16319
• refactor(firestore): remove obsolete OS availability checks by @ncooke3 in #16318
• docs(appcheck): Update CHANGELOG.md by @ncooke3 in #16334
• chore(m183): update changelogs by @daymxn in #16335
• fix(ailogic): xcode 27 renaming deprecation by @ncooke3 in #16297
• Add support for the new FCM registration ID. by @leojaygoogle in #16133
• fix more zizmor findings by @morganchen12 in #16338
• Analytics 12.16.0 by @pcfba in #16340
• NOTICES Change by @github-actions[bot] in #16342
• feat(ci): add workflow_dispatch trigger to infra.notice_generation.yml by @ncooke3 in #16343
• fix(ci): prioritize SpecsStaging over SpecsTesting in NOTICES generation by @ncooke3 in #16344
• NOTICES Change by @github-actions[bot] in #16346
• Update Changelog for #16163 by @JesusRojass in #16347
• fix bad persist-credential by @morganchen12 in #16348
• chore(m183): update Firestore target by @daymxn in #16362

New Contributors

• @Mcrich23 made their first contribution in #16281
• @aybarska made their first contribution in #16270

Full Changelog: 12.15.0...12.16.0

The Firebase Apple SDK (12.15.0) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• [Core] Require swift-tools-version:6.1 in Package.swift by @andrewheard in #16223
• [AI] Rename GeminiModel to GeminiLanguageModel by @andrewheard in #16227
• fix(appcheck): remove redundant fac debug token logging by @ncooke3 in #16197
• feat(appcheck): Add new internal, default provider by @ncooke3 in #16190
• docs(appcheck): prefer 'AppCheckDebugToken' for debug env var injection by @ncooke3 in #16230
• feat(appcheck): add helpful log for registering debug tokens by @ncooke3 in #16232
• [AI] Add Hashable conformance to model config types by @andrewheard in #16233
• [AI] Add public init for GeminiLanguageModel by @andrewheard in #16234
• feat(ai): add app check dependency by @ncooke3 in #16185
• Readme improvements by @paulb777 in #16238
• [AI] Revert rename of GeminiModel to GeminiLanguageModel by @andrewheard in #16237
• Migrate repo dev content from README to CONTRIBUTING by @paulb777 in #16239
• [AI] Add readme banner for FMF adapter by @paulb777 in #16248
• Analytics 12.15.0 by @htcgh in #16250
• fix(firestore): remove designated initializers for force_index by @dlarocque in #16229
• fix(ai): Handle Xcode 27 LanguageModelSession.Error collision by @andrewheard in #16257
• feat(appcheck): implement RecaptchaEnterpriseProvider and tests by @ncooke3 in #16155
• [AI] Support SpeechConfig in Text-To-Speech by @milaGGL in #16226
• try building docc docs on swift package index by @morganchen12 in #16262

Full Changelog: 12.14.0...12.15.0

The Firebase Apple SDK (12.14.0) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• [ABT] Fix race crash by @paulb777 in #16148
• fix(firestore): add noexcept specifiers to move, swap, hash operations by @dlarocque in #16117
• [Crashlytics] Refactor non-fatal error logging to use FIRCLSNonFatalError model by @mghaznav in #16139
• feat(firestore): Add support for forceIndex option by @dlarocque in #16084
• [Perf] Fix a race condition by @paulb777 in #16153
• fix(spm): trailing comma in Package.swift for FirebaseAILogic target by @ncooke3 in #16162
• [AI] Use respond(to:options:) for String generation by @andrewheard in #16165
• [Perf] Add networkInstrumentationEnabled opt-out flag (#8277) by @JesusRojass in #16168
• [Perf] Cache swizzleClassDenylist in lazy ivar by @JesusRojass in #16174
• [AI] Remove Gemma from header comment on GeminiModel by @andrewheard in #16177
• chore: fix a bunch of typos in the swift files by @MojtabaHs in #16179
• fix(docs): fix maps grounding phrasing in #16180
• [AI] Handle GenerateContentResponse with only usageMetadata by @andrewheard in #16171
• [App Check] Add AppAttestProviderFactory by @andrewheard in #16182
• feat(cocoapods): Add CocoaPods deprecation warnings to Podspec, README, and CHANGELOG by @ncooke3 in #16172

Full Changelog: 12.13.0...12.14.0

The Firebase Apple SDK (12.13.0) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• [AI] Maps Grounding by @paulb777 in #15911
• [AI] Fix no member 'autoFunctionDeclaration' compile error by @morganchen12 in #16037
• [Release] Update Carthage artifacts for 12.12.0 by @andrewheard in #16053
• [AI] Annotate Imagen integration tests as deprecated by @andrewheard in #16054
• Update upload-symbols with better logging and reading DEVELOPER_DIR to get Xcode path for CoreSymbolication by @tejasd in #16007
• feat(firestore): add array expressions by @milaGGL in #16001
• Fix AI logic link to console by @rizafran in #16055
• docs: Remove deprecated product recontext model samples from docstrings by @copybara-service[bot] in #16057
• [AI] Consolidate duplicate generateContentStream code by @paulb777 in #16046
• [AI] Remove unused decoder constant by @paulb777 in #16047
• chore: Clean up no-op converters by @copybara-service[bot] in #16056
• fix(ci): address GHA issue for missing swift sdk with static frameworks by @ncooke3 in #16049
• fix(storage): key InstanceCache by app name and bucket (#16039) by @llamington in #16040
• feat: Add Live Avatar new fields by @copybara-service[bot] in #16058
• Fix a recent style regression in Firestore source by @paulb777 in #16068
• chore: support new config mappings and fields for gemini-embedding-2 on GenAI SDK by @copybara-service[bot] in #16065
• Implement help option in add_copyright.sh by @ryanwilson in #16063
• [AI] Add Maps grounding tests using GenerativeModelSession by @andrewheard in #16062
• [SPM] Fix unfound file warnings from swift build by @paulb777 in #16041
• [Perf] Defer class disposal in FPRObjectSwizzler to avoid race by @paulb777 in #16074
• Fix missing thoughts in GenerativeModelSession.streamResponse by @peterfriese in #16075
• Optimize Firestore CI and Migrate Test Retries to xcodebuild by @cherylEnkidu in #16024
• [AI] feat: Add Google Maps Grounding support for Server Prompt Templates by @paulb777 in #16067
• fix(ci): link in swift sdk to objc test apps by @ncooke3 in #16048
• Fix NSURLSession delegate instrumentation for NSProxy delegates #14478 by @JesusRojass in #15869
• [AI] Add wrapper for FoundationModels.SystemLanguageModel by @andrewheard in #16086
• [Perf] Fix MapTable race by @paulb777 in #16072
• tests(ai): add missing deprecation marker to test by @daymxn in #16094
• Remove spm-binary and add xcodetest_nightly to required tests by @cherylEnkidu in #16097
• chore: Merge release 12.12 by @ncooke3 in #16096
• chore: Update versions for Release 12.13.0 by @ncooke3 in #16099
• [Perf] Format files by @dlarocque in #16101
• Fix race in FIRCLSContextMarkAndCheckIfCrashed (#15384) by @JesusRojass in #16092
• Refactor GenerateContentResponse text accessors by @ryanwilson in #16087
• [AI] Add wrapper for FoundationModels.GenerationOptions by @andrewheard in #16103
• fix(ai): migrate gemma 3 models to gemma 4 by @daymxn in #16093
• [AI] Add GenerationOptionsRepresentable for hybrid generation opts by @andrewheard in #16105
• [AI] Extract Gemini-specific logic into GeminiModelSession by @andrewheard in #16109
• [AI] Add HybridModel to support a fallback model by @andrewheard in #16110
• [AI] Add visionOS 26.0 to @available annotations by @andrewheard in #16114
• [CI] Remove OS=${xcode_version} from watchos_flags in build.sh by @andrewheard in #16115
• [AI] Add hybrid support with Foundation Models by @andrewheard in #16111
• [AI] Add hybrid tag in x-goog-api-client header by @andrewheard in #16118
• [AI] Lazily initialize sessions in HybridModelSession by @andrewheard in #16119
• [AI] Refactor GeminiModelSession to use text(isThought:) by @andrewheard in #16122
• Upgrade cmake version by @cherylEnkidu in #16124
• feat(firestore): Added search stage support for languageCode, offset, limit, and retrievalDepth by @MarkDuckworth in #16113
• Implement Experiment Metadata Tracking for Realtime Config Updates by @tusharkhandelwal8 in #15976
• Fix: Preserve caller stack trace and timestamp for queued Crashlytics API calls by @mghaznav in #16126
• [AI] Add ImageConfig support for generateContent by @paulb777 in #15923
• [AI] Finish Reasons by @paulb777 in #15931
• feat(ai): add live session resumption by @cynthiajoan in #15904
• chore: update changelogs for 12.13.0 release by @daymxn in #16128
• Analytics 12.13.0 by @htcgh in #16129
• chore: fix AI logic changelog entries by @daymxn in #16131
• [AI] Remove GenerativeModelSession public initializer by @andrewheard in #16130
• [AI] Add GenerateContentResponse.modelVersion to public API by @andrewheard in #16132
• [AI] Add hybrid and Foundation Models debug logging by @andrewheard in #16134
• chore: update Firestore binary for 12.13.0 by @daymxn in #16138

New Contributors

• @llamington made their first contribution in #16040
• @cynthiajoan made their first contribution in #15904

Full Changelog: 12.12.1...12.13.0

The Firebase Apple SDK (12.12.1) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

Full Changelog: 12.12.0...12.12.1

The Firebase Apple SDK (12.12.0) is now available. For more details, see the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• Add variable reference field proto by @cherylEnkidu in #15902
• [AI] Lower minimum required deployment targets by @andrewheard in #15928
• feat: add first, last, arrayAgg and arrayAggDistinct expressions by @yvonnep165 in #15941
• feat: add rand and trunc expressions by @yvonnep165 in #15938
• feat(firestore): Add array expressions by @milaGGL in #15900
• feat(firestore): Add logical expressions by @milaGGL in #15943
• [AI] Conform GenerationConfig and Schema to Equatable by @andrewheard in #15949
• chore(ai): Add additional logging support for live api server messages by @daymxn in #15940
• [AI] Refactor stream parsing to skip intermediate failures by @andrewheard in #15960
• [Auth] Fix a race condition by @paulb777 in #15951
• Build zip with Xcode 26.2 x macOS 26 by @ncooke3 in #15786
• Fix app_start trace not firing in SwiftUI apps using @UIApplicationDelegateAdaptor (#15802) by @JesusRojass in #15912
• Removes the then(_:else:) function which can be replaced with ConditionalExpression by @cherylEnkidu in #15926
• remove beta references for pipelines by @wu-hui in #15988
• feat(ai): add deprecation notices to Imagen types by @daymxn in #15985
• Add subquery support in pipeline by @cherylEnkidu in #15963
• feat(firestore): Add expressions ifNull and coalesce by @milaGGL in #15989
• Add AsyncStream support for Cloud Firestore by @peterfriese in #15363
• feat(firestore): add isType pipeline expression by @dlarocque in #16009
• feat: Add timestamp expressions by @yvonnep165 in #15984
• Add AsyncStream support for Remote Config by @peterfriese in #15352
• Add AsyncStream support for Firebase Auth by @peterfriese in #15362
• feat(firestore): add map pipeline expressions by @dlarocque in #16015
• Search by @MarkDuckworth in #15952
• feat: Add the parent expression by @yvonnep165 in #16010
• fix(auth, functions): Xcode 26.4 'async let' cleanup crashes by @ncooke3 in #15991
• fix: Update Xcode 26 note in FirebaseCore/CHANGELOG.md by @ncooke3 in #15986
• feat(firestore): add string pipeline expressions by @dlarocque in #16008
• [AI] Automatic function calling by @andrewheard in #15915
• AuthenticationExample secure password fields by @macastelaz in #16000

New Contributors

• @yvonnep165 made their first contribution in #15941
• @macastelaz made their first contribution in #16000

Full Changelog: 12.11.0...12.12.0

The Firebase Apple SDK (12.11.0) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• [Infra] Add script to automatically add copyright to files by @ryanwilson in #15878
• chore(m177): Update carthage json versions by @daymxn in #15887
• chore(m177): Update versions for Release 12.11.0 by @daymxn in #15888
• firestore(chore): ordered_code.cc: remove usage of absl internal function STLStringResizeUninitialized by @dconeybe in #15889
• fix: Crashlytics defer API calls until async context initialization completes by @mghaznav in #15879
• fix(ci): Update to clang-format@22 by @andrewheard in #15890
• [AI] Fix documentation generation warnings by @andrewheard in #15892
• [Infra] clang-format 22 updates by @paulb777 in #15899
• [AI] Update integration tests to Gemini 3.1 by @paulb777 in #15898
• fix: exempt GeneratedFirebaseAI from style script by @ncooke3 in #15906
• No public description by @copybara-service[bot] in #15907
• Partial rollback: keep copyrights but undo format changes. by @copybara-service[bot] in #15908
• infra: only enforce code owner reviews for root Package.swift by @ncooke3 in #15910
• feat: Add inference_generation_config to EvaluationConfig for Tuning by @copybara-service[bot] in #15909
• [AI] Integration Test fix by @paulb777 in #15914
• [AI] Add GenerativeModelSession with structured output APIs by @andrewheard in #15872
• [AI] Add GenerationConfig.merge(_:with:) unit tests by @andrewheard in #15918
• fix(ci): exclude Carthage dir from check script by @daymxn in #15919
• chore: changelogs for M178 by @ncooke3 in #15921
• Analytics 12.11.0 by @htcgh in #15922
• chore: Update Package.swift for Firestore 12.11.0 (#15929) by @ncooke3 in #15932

New Contributors

• @mghaznav made their first contribution in #15879

Full Changelog: 12.10.0...12.11.0

The Firebase Apple SDK (12.10.0) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• [Firestore] Add support for regexFind and regexFindAll by @dlarocque in #15766
• feat: set Xcode version one time in release.zip.yml by @ncooke3 in #15776
• feat: add new reusable workflow, _build.yml by @ncooke3 in #15762
• chore: update firestore binary for m176 by @ncooke3 in #15779
• chore: carthage updates for M176 by @ncooke3 in #15783
• chore: Update versions for Release 12.10.0 by @ncooke3 in #15784
• Change Firestore CI by @cherylEnkidu in #15685
• Disable secret-depending CI jobs when run from forks by @paulb777 in #15798
• Fix a race condition by replacing mstats() with malloc_zone_statistics(). #15501 by @JesusRojass in #15595
• Remote Config: Document workaround for empty data after device restore by @tusharkhandelwal8 in #15800
• infra: fix Firestore CI cron jobs by @ncooke3 in #15804
• chore(deps): bump faraday from 1.1.0 to 2.14.1 in /.github/actions/testing_report_generation by @dependabot[bot] in #15797
• chore(deps): bump faraday from 1.1.0 to 1.10.5 in /.github/actions/notices_generation by @dependabot[bot] in #15810
• [AI] Migrate integration tests from deprecated DevAPI Gemini 2.0 by @paulb777 in #15809
• chore(m177): Update changelogs for release by @daymxn in #15815
• chore(ci): adress workflow linting warnings by @ncooke3 in #15816
• add environment to pat flows by @morganchen12 in #15823
• fix: rollback recent dependabot updates that broke nightly report gen by @ncooke3 in #15818
• Analytics 12.10.0 by @pcfba in #15847
• fix: deadlock in Sessions SDK by @ncooke3 in #15842
• fix: Update sdk.firestore.yml by @ncooke3 in #15867
• Replace the deprecated Base64Escape function call by @cherylEnkidu in #15820
• fix: Update release.cocoapods.yml by @ncooke3 in #15865
• fix: Update release.cocoapods.prerelease.yml by @ncooke3 in #15866
• [AI] Add AGENTS.md for FirebaseAI/Sources by @paulb777 in #15871
• [AI] Fix API doc build warnings by @paulb777 in #15883
• chore(m177): Update Firestore url/checksum by @daymxn in #15881

Full Changelog: 12.9.0...12.10.0

The Firebase Apple SDK (12.9.0) is now available. For more details, see
the Firebase Apple SDK release notes.

To install this SDK, see Add Firebase to your project.

What's Changed

• fix: collisions in artifact names from re-usable catalyst job by @ncooke3 in #15709
• fix: exempt changelogs from CODEOWNERS by @ncooke3 in #15712
• [Release] Update Carthage artifacts for 12.8.0 by @andrewheard in #15713
• [Release] Update versions for 12.9.0 by @andrewheard in #15714
• [Auth] Should not force App Check token refreshes by @paulb777 in #15716
• Fix SymbolCollision workflow flakes by @google-labs-jules[bot] in #15717
• [FirebaseAI] Implicit caching support by @paulb777 in #14944
• [AI] URL Context is now GA in Gemini models by @paulb777 in #15719
• [AI] Update integration test for changed Gemini 3 thinking by @paulb777 in #15708
• [AI] Restore URL Context integration test by @paulb777 in #15707
• [AI] minimal thinking level no longer thinks by @paulb777 in #15721
• Add unit test for FirebaseOptions copying by @google-labs-jules[bot] in #15722
• fix: install missing sims in sdk.storage.yml by @ncooke3 in #15724
• fix: install missing sims in sdk.auth.yml by @ncooke3 in #15731
• [AI] More robust thoughtTokenCount gemini 3 test by @paulb777 in #15730
• [AI] Add an implicit caching unit test by @paulb777 in #15727
• [Crashlytics] Conforming to Mach IPC security restrictions by @themiswang in #15612
• fix: flaky FIRMessagingPendingTopicsListTest.m by @ncooke3 in #15726
• [Crashlytics] Mach IPC identity protected address backwards compatibility by @themiswang in #15725
• [Crashlytics] Add attribute for Info.plist to manually force back to mach exception default behavior by @themiswang in #15735
• fix: install missing sims in sdk.performance.yml by @ncooke3 in #15738
• fix: extend lint timeout in sdk.crashlytics.yml by @ncooke3 in #15739
• fix: install missing sims in sdk.inappmessaging.yml by @ncooke3 in #15741
• chore: remove unused scripts by @ncooke3 in #15744
• fix: fail prerelease workflow if prerelease tagging fails by @ncooke3 in #15747
• [Firestore] Update proto copyright dates by @dlarocque in #15751
• fix: Xcode/OS matrices in reusable SPM and CP workflows by @ncooke3 in #15732
• fix: Move reusable SPM and CocoaPods workflows to use Xcode 26.2 by @ncooke3 in #15756
• Change the behaviour of not-in and != when convert standard query to pipeline by @cherylEnkidu in #15667
• docs: changelogs for m176 by @ncooke3 in #15771
• docs: add naming guidelines for GHA by @ncooke3 in #15772
• chore: update firestore binary for m176 (#15779) by @ncooke3 in #15781

Full Changelog: 12.8.0...12.9.0