doc: Add release notes for the 2.9.0 release

Add release notes for NCS v2.9.0 release. - [ ] Update webinar link - [ ] Make release notes ready for review - [ ] Clean changelog - [ ] Add finalized highlights to the release notes - [ ] Migration guide cleanup Signed-off-by: Pekka Niskanen <[email protected]>
nrfconnect · Dec 4, 2024 · 1928088 · 1928088
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diff --git a/doc/nrf/links.txt b/doc/nrf/links.txt
@@ -200,9 +200,9 @@
 .. _`nRF Asset Tracker Memfault integration for AWS IoT`: https://github.com/NordicSemiconductor/asset-tracker-cloud-memfault-aws-js
 .. _`nRF Asset Tracker Memfault integration for Azure IoT Hub`: https://github.com/NordicSemiconductor/asset-tracker-cloud-memfault-azure-js
 
+.. _`Memfault-SDK`:
 .. _`Memfault firmware SDK`: https://github.com/memfault/memfault-firmware-sdk
 .. _`Memfault WebBluetooth Client source code`: https://github.com/memfault/web-ble-example/blob/main/mds.js
-.. _`Memfault-SDK`: https://github.com/memfault/memfault-firmware-sdk
 
 .. _`Zephyr hostap fork`: https://github.com/zephyrproject-rtos/hostap
 
@@ -364,6 +364,7 @@
 
 .. #### Source: www.nordicsemi.com/Events/
 
+.. _`nRF Connect SDK v2.9.0 webinar`:
 .. _`nRF Connect SDK v2.8.0 webinar`: https://webinars.nordicsemi.com/events
 .. _`nRF Connect SDK v2.7.0 webinar`: https://www.nordicsemi.com/Events/2024/Webinar-Exciting-new-features-in-nRF-Connect-SDK-v270
 .. _`nRF Connect SDK v2.6.0 webinar`: https://www.nordicsemi.com/Events/2024/Webinar-Exciting-new-features-in-nRF-Connect-SDK-v260
@@ -423,7 +424,8 @@
 .. _`nRF Connect SDK latest documentation`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/index.html
 
 .. _`known issues page on the main branch`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/known_issues.html
-.. _`known issues for nRF Connect SDK v2.8.0`: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/releases_and_maturity/known_issues.html?v=v2-8-0
+.. _`known issues for nRF Connect SDK v2.9.0`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/known_issues.html?v=v2-9-0
+.. _`known issues for nRF Connect SDK v2.8.0`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/known_issues.html?v=v2-8-0
 .. _`known issues for nRF Connect SDK v2.7.0`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/known_issues.html?v=v2-7-0
 .. _`known issues for nRF Connect SDK v2.6.2`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/known_issues.html?v=v2-6-2
 .. _`known issues for nRF Connect SDK v2.6.1`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/releases_and_maturity/known_issues.html?v=v2-6-1
@@ -472,6 +474,7 @@
 
 .. _`nRF socket options`: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrfxlib/nrf_modem/doc/sockets.html
 
+.. _`Repositories and revisions for v2.9.0`: https://docs.nordicsemi.com/bundle/ncs-2.9.0/page/nrf/releases_and_maturity/repository_revisions.html
 .. _`Repositories and revisions for v2.8.0`: https://docs.nordicsemi.com/bundle/ncs-2.8.0/page/nrf/releases_and_maturity/repository_revisions.html
 .. _`Repositories and revisions for v2.7.99-cs2`: https://docs.nordicsemi.com/bundle/ncs-2.7.99-cs2/page/nrf/releases_and_maturity/repository_revisions.html
 .. _`Repositories and revisions for v2.7.99-cs1`: https://docs.nordicsemi.com/bundle/ncs-2.7.99-cs1/page/nrf/releases_and_maturity/repository_revisions.html
@@ -503,6 +506,7 @@
 .. _`Repositories and revisions for v1.9.1`: https://docs.nordicsemi.com/bundle/ncs-1.9.1/page/nrf/introduction.html#repositories_and_revisions
 .. _`Repositories and revisions`: https://docs.nordicsemi.com/bundle/ncs-1.9.0/page/nrf/introduction.html#repositories_and_revisions
 
+.. _`Modem library changelog for v2.9.0`: https://docs.nordicsemi.com/bundle/ncs-2.9.0/page/nrfxlib/nrf_modem/doc/CHANGELOG.html#nrf-modem-changelog
 .. _`Modem library changelog for v2.8.0`: https://docs.nordicsemi.com/bundle/ncs-2.8.0/page/nrfxlib/nrf_modem/doc/CHANGELOG.html#nrf-modem-changelog
 .. _`Modem library changelog for v2.7.0`: https://docs.nordicsemi.com/bundle/ncs-2.7.0/page/nrfxlib/nrf_modem/doc/CHANGELOG.html#nrf-modem-changelog
 .. _`Modem library changelog for v2.6.2`: https://docs.nordicsemi.com/bundle/ncs-2.6.2/page/nrfxlib/nrf_modem/doc/CHANGELOG.html#nrf-modem-changelog
@@ -531,6 +535,7 @@
 .. _`Modem library changelog for v1.9.1`: https://docs.nordicsemi.com/bundle/ncs-1.9.1/page/nrfxlib/nrf_modem/doc/CHANGELOG.html
 .. _`Modem library changelog for v1.9.0`: https://docs.nordicsemi.com/bundle/ncs-1.9.0/page/nrfxlib/nrf_modem/doc/CHANGELOG.html
 
+.. _`LwM2M carrier library changelog for v2.9.0`: https://docs.nordicsemi.com/bundle/ncs-2.9.0/page/nrf/libraries/bin/lwm2m_carrier/CHANGELOG.html#liblwm2m-carrier-changelog
 .. _`LwM2M carrier library changelog for v2.8.0`: https://docs.nordicsemi.com/bundle/ncs-2.8.0/page/nrf/libraries/bin/lwm2m_carrier/CHANGELOG.html#liblwm2m-carrier-changelog
 .. _`LwM2M carrier library changelog for v2.7.0`: https://docs.nordicsemi.com/bundle/ncs-2.7.0/page/nrf/libraries/bin/lwm2m_carrier/CHANGELOG.html#liblwm2m-carrier-changelog
 .. _`LwM2M carrier library changelog for v2.6.2`: https://docs.nordicsemi.com/bundle/ncs-2.6.2/page/nrf/libraries/bin/lwm2m_carrier/CHANGELOG.html#liblwm2m-carrier-changelog
@@ -647,11 +652,10 @@
 .. _`Setting up the SDK for Amazon Sidewalk`: https://docs.nordicsemi.com/bundle/sidewalk_latest/page/setting_up_sidewalk_environment/setting_up_sdk.html
 
 .. _`nRF9160 Product Specification`: https://docs.nordicsemi.com/bundle/ps_nrf9160/page/nRF9160_html5_keyfeatures.html
+.. _`nRF9160 DK GPS`:
 .. _`nRF9160 GPS receiver specification`: https://docs.nordicsemi.com/bundle/ps_nrf9160/page/gps.html
 .. _`nRF9160 SiP pin configuration`: https://docs.nordicsemi.com/bundle/ref_at_commands/page/REF/at_commands/sip_pin_configuration/sip_pin_configuration.html
 
-.. _`nRF9160 DK GPS`: https://docs.nordicsemi.com/bundle/ps_nrf9160/page/gps.html
-
 .. _`nWP044 - Best practices for cellular IoT development`: https://docs.nordicsemi.com/bundle/nwp_044/page/WP/nwp_044/lte_technology.html
 .. _`Security protocol for cellular IoT`: https://docs.nordicsemi.com/bundle/nwp_044/page/WP/nwp_044/security_protocols.html
 
@@ -746,6 +750,7 @@
 
 .. _`nRF52805 Product Specification`: https://docs.nordicsemi.com/bundle?labelkey=nrf52805&labelkey=product-specification
 
+.. _`nRF21540 DK User Guide`:
 .. _`nRF21540`: https://docs.nordicsemi.com/bundle/ug_nrf21540_dk/page/UG/nrf21540_DK/intro.html
 .. _`nRF21540 Product Specification`: https://docs.nordicsemi.com/bundle/ps_nrf21540/page/keyfeatures_html5.html
 .. _`nRF21540 Front-End Module`: https://docs.nordicsemi.com/bundle/ug_nrf21540_dk/page/UG/nrf21540_DK/front_end_module.html
@@ -755,20 +760,19 @@
 .. _`Product specification for nRF70 Series devices`: https://docs.nordicsemi.com/bundle/ps_nrf7002/page/keyfeatures_html5.html
 .. _`nRF7002 DK Hardware`: https://docs.nordicsemi.com/bundle/ug_nrf7002_dk/page/UG/nrf7002_DK/intro.html
 .. _`nRF70 Series hardware documentation`:
+.. _`Guidelines and application notes for nRF70 Series devices`:
 .. _`nRF70 Series`: https://docs.nordicsemi.com/category/nrf-70-series
 
 .. _`Measuring current`: https://docs.nordicsemi.com/bundle/ug_nrf7002_dk/page/UG/nrf7002_DK/hw_measure_current.html
 
-.. _`Guidelines and application notes for nRF70 Series devices`: https://docs.nordicsemi.com/category/nrf-70-series
-
 .. _`nRF70 Series power states`: https://docs.nordicsemi.com/bundle/ps_nrf7002/page/chapters/functional/doc/power_states.html
 
+.. _`nRF7002 EK`:
 .. _`nRF7002 EK User Guide`: https://docs.nordicsemi.com/bundle/ug_nrf7002_ek/page/UG/nrf7002_EK/intro.html
 .. _`nRF7002 EB User Guide`: https://docs.nordicsemi.com/bundle/ug_nrf7002_eb/page/UG/nrf7002_EB/intro.html
 .. _`nRF7002 EB PCB edge connector`: https://docs.nordicsemi.com/bundle/ug_nrf7002_eb/page/UG/nrf7002_EB/pcb_edge_connector.html
 .. _`Using nRF7002 EB with the Nordic Thingy:53`: https://docs.nordicsemi.com/bundle/ug_nrf7002_eb/page/UG/nrf7002_EB/use_thingy53.html
 .. _`nRF7002 EB castellated edge holes`: https://docs.nordicsemi.com/bundle/ug_nrf7002_eb/page/UG/nrf7002_EB/castellated_mounting_holes.html
-.. _`nRF7002 EK`: https://docs.nordicsemi.com/bundle/ug_nrf7002_ek/page/UG/nrf7002_EK/intro.html
 .. _`nRF7002 companion IC`: https://docs.nordicsemi.com/bundle/ug_nrf7002_ek/page/UG/nrf7002_EK/hw_wifi_companion_ic.html
 .. _`Antenna gain compensation`: https://docs.nordicsemi.com/bundle/nan_046/page/APP/nan_046/antenna_compensation.html
 .. _`Band edge compensation`: https://docs.nordicsemi.com/bundle/nan_046/page/APP/nan_046/band_compensation.html
@@ -791,14 +795,13 @@
 .. _`nPM Fuel Gauge Board`: https://www.nordicsemi.com/Products/Development-hardware/nPM-Fuel-Gauge-board
 .. _`Using the nPM1300 Fuel Gauge`: https://docs.nordicsemi.com/bundle/nan_045/page/APP/nan_045/intro.html
 
-.. _`nRF21540 Product Specification`: https://docs.nordicsemi.com/bundle/ps_nrf21540/page/keyfeatures_html5.html
-.. _`nRF21540 DK User Guide`: https://docs.nordicsemi.com/bundle/ug_nrf21540_dk/page/UG/nrf21540_DK/intro.html
 .. _`nRF21540 EK User Guide`: https://docs.nordicsemi.com/bundle/ug_nrf21540_ek/page/UG/nrf21540_DK/intro.html
 
 .. _`AP-Protect for nRF9151`: https://docs.nordicsemi.com/bundle/ps_nrf9151/page/dif.html#ariaid-title3
 .. _`AP-Protect for nRF9161`: https://docs.nordicsemi.com/bundle/ps_nrf9161/page/dif.html#ariaid-title3
 .. _`Debugger access protection for nRF9160`: https://docs.nordicsemi.com/bundle/ps_nrf9160/page/dif.html#ariaid-title2
 .. _`AP-Protect for nRF5340`: https://docs.nordicsemi.com/bundle/ps_nrf5340/page/debugandtrace.html#ariaid-title9
+.. _`access port protection mechanism`:
 .. _`AP-Protect for nRF52840`: https://docs.nordicsemi.com/bundle/ps_nrf52840/page/dif.html#ariaid-title3
 .. _`AP-Protect for nRF52833`: https://docs.nordicsemi.com/bundle/ps_nrf52833/page/dif.html#ariaid-title3
 .. _`AP-Protect for nRF52832`: https://docs.nordicsemi.com/bundle/ps_nrf52832/page/dif.html#d913e149
@@ -851,8 +854,6 @@
 
 .. _`SWD Select`: https://docs.nordicsemi.com/bundle/ug_thingy91/page/UG/thingy91/hw_description/programming_debugging_interface.html
 
-.. _`access port protection mechanism`: https://docs.nordicsemi.com/bundle/ps_nrf52840/page/dif.html#ariaid-title3
-
 .. _`Wi-Fi Alliance Certification for nRF70 Series`: https://docs.nordicsemi.com/bundle/nwp_045/page/WP/nwp_045/intro.html
 
 .. _`Errata 254`: https://docs.nordicsemi.com/bundle/errata_nRF52840_Rev3/page/ERR/nRF52840/Rev3/latest/config_840_254.html
@@ -972,6 +973,8 @@
 
 .. ### Source: bluetooth.org and bluetooth.com
 
+.. _`Bluetooth Mesh profile specification`:
+.. _`Bluetooth NLC profile specifications`:
 .. _`Bluetooth Core Specification`: https://www.bluetooth.com/specifications/specs/
 .. _`Bluetooth® LE Audio specifications`: https://www.bluetooth.com/learn-about-bluetooth/recent-enhancements/le-audio/le-audio-specifications/
 
@@ -984,6 +987,8 @@
 .. _`Current Time Service Specification`: https://www.bluetooth.org/docman/handlers/downloaddoc.ashx?doc_id=292957
 .. _`Running Speed and Cadence Service Specification`: https://www.bluetooth.com/specifications/specs/running-speed-and-cadence-service-1-0/
 .. _`Continuous Glucose Monitoring Service Specification`: https://www.bluetooth.org/DocMan/handlers/DownloadDoc.ashx?doc_id=531249
+.. _`Ranging Profile Specification`: https://files.bluetooth.com/download/rap_v1-0/
+.. _`Ranging Service Specification`: https://files.bluetooth.com/download/ras_v1-0/
 
 .. _`Bluetooth SIG company identifiers`: https://www.bluetooth.com/specifications/assigned-numbers/company-identifiers/
 
@@ -1001,8 +1006,6 @@
 
 .. _`Bluetooth Mesh model specification`: https://www.bluetooth.com/specifications/specs/mesh-model-1-1/
 .. _`Bluetooth Mesh protocol specification`: https://www.bluetooth.com/specifications/specs/mesh-protocol/
-.. _`Bluetooth Mesh profile specification`: https://www.bluetooth.com/specifications/specs/
-.. _`Bluetooth NLC profile specifications`: https://www.bluetooth.com/specifications/specs/
 
 .. _`Bluetooth Mesh model overview`: https://www.bluetooth.com/bluetooth-resources/bluetooth-mesh-models/
 .. _`Bluetooth Mesh glossary`: https://www.bluetooth.com/learn-about-bluetooth/recent-enhancements/mesh/mesh-glossary/
@@ -1155,6 +1158,7 @@
 .. _`Set up your AWS account`: https://docs.aws.amazon.com/iot/latest/developerguide/setting-up.html
 .. _`AWS Command Line Interface`: https://aws.amazon.com/cli/
 .. _`AWS IoT Core policy examples`: https://docs.aws.amazon.com/iot/latest/developerguide/example-iot-policies.html
+.. _`AWS IoT Developer Guide: Security Best Practices`:
 .. _`Security best practices in AWS IoT Core`: https://docs.aws.amazon.com/iot/latest/developerguide/security-best-practices.html
 .. _`AWS IoT Core Server Authentication`: https://docs.aws.amazon.com/iot/latest/developerguide/server-authentication.html
 .. _`CA certificates for server authentication in AWS IoT Core`: https://docs.aws.amazon.com/iot/latest/developerguide/server-authentication.html#server-authentication-certs
@@ -1170,7 +1174,6 @@
 .. _`AWS IoT Developer Guide`: https://docs.aws.amazon.com/iot/latest/developerguide/what-is-aws-iot.html
 .. _`AWS IoT MQTT`: https://docs.aws.amazon.com/iot/latest/developerguide/mqtt.html
 .. _`AWS IoT Developer Guide: Basic Policy Variables`: https://docs.aws.amazon.com/iot/latest/developerguide/basic-policy-variables.html
-.. _`AWS IoT Developer Guide: Security Best Practices`: https://docs.aws.amazon.com/iot/latest/developerguide/security-best-practices.html
 .. _`AWS IoT jobs`:
 .. _`AWS IoT Developer Guide: Jobs`: https://docs.aws.amazon.com/iot/latest/developerguide/iot-jobs.html
 .. _`AWS IoT Developer Guide: Managing Jobs`: https://docs.aws.amazon.com/iot/latest/developerguide/create-manage-jobs.html
@@ -1291,7 +1294,6 @@
 .. _`Memfault: Error Tracking with Trace Events`: https://docs.memfault.com/docs/embedded/trace-events/
 .. _`Memfault Demo CLI`: https://docs.memfault.com/docs/mcu/demo-cli/
 
-.. _`Memfault Dashboards`: https://app.memfault.com
 .. _`Memfault debugging`: https://docs.memfault.com/docs/platform/introduction#debugging
 .. _`Memfault OTA`: https://docs.memfault.com/docs/platform/introduction#ota
 .. _`Memfault monitoring`: https://docs.memfault.com/docs/platform/introduction#metrics
@@ -1518,14 +1520,14 @@
 
 .. _`Onomondo LTE-M coverage`: https://onomondo.com/product/coverage/lte-m-networks/
 .. _`Onomondo NB-IoT coverage`: https://onomondo.com/product/coverage/nb-iot-networks/
-.. _`Onomondo SoftSIM integration with the nRF91 Series`: https://help.onomondo.com/en/how-to-integrate-the-onomondo-softsim-with-the-nrf9160-from-nordic-semiconductor
+.. _`Onomondo SoftSIM integration with the nRF91 Series`: https://help.onomondo.com/en/articles/208415-how-to-integrate-the-onomondo-softsim-with-the-nrf91-series-from-nordic-semiconductor
 
 .. ### Source: bosch-sensortec.com
 
 .. _`BME688`: https://www.bosch-sensortec.com/products/environmental-sensors/gas-sensors/bme688/
 .. _`BME680`: https://www.bosch-sensortec.com/products/environmental-sensors/gas-sensors/bme680/
 .. _`BMI270`: https://www.bosch-sensortec.com/products/motion-sensors/imus/bmi270/
-.. _`Bosch BSEC`: https://www.bosch-sensortec.com/software-tools/software/bsec/
+.. _`Bosch BSEC`: https://www.bosch-sensortec.com/software-tools/software/bme680-software-bsec/
 .. _`BSEC license`: https://www.bosch-sensortec.com/media/boschsensortec/downloads/software/bme688_development_software/2023_04/license_terms_bme688_bme680_bsec.pdf
 
 .. ### Source: wireshark.org
@@ -1542,6 +1544,8 @@
 
 .. ### Source: files.nordicsemi.com
 
+.. _`Twister test report for nRF Connect SDK v2.9.0`: https://files.nordicsemi.com/ui/api/v1/download/contentBrowsing/NCS/external/release/v2.9.0/test-report/twister_test_results_report.html?isNativeBrowsing=true
+.. _`Hardware test report for nRF Connect SDK v2.9.0`: https://files.nordicsemi.com/ui/api/v1/download/contentBrowsing/NCS/external/release/v2.9.0/test-report/common_ncs_test_results_report.html?isNativeBrowsing=true
 .. _`Twister test report for nRF Connect SDK v2.8.0`: https://files.nordicsemi.com/ui/api/v1/download/contentBrowsing/NCS/external/release/v2.8.0/test-report/twister_test_results_report.html?isNativeBrowsing=true
 .. _`Hardware test report for nRF Connect SDK v2.8.0`: https://files.nordicsemi.com/ui/api/v1/download/contentBrowsing/NCS/external/release/v2.8.0/test-report/common_ncs_test_results_report.html?isNativeBrowsing=true
 .. _`nRF Auracast configuration files`: https://files.nordicsemi.com/ui/repos/tree/General/ncs-audio/external/nRF-Aura-Config
@@ -1698,7 +1702,7 @@
 .. _`BICR register's PDF file`: https://res.developer.nordicsemi.com/res/nrf54H20/BICR/nRF54H20_BICR_0_11_0.pdf
 .. _`nRF Command Line Tools 10.22.1`: https://www.nordicsemi.com/Products/Development-tools/nrf-command-line-tools/download
 
-.. _`documentation page on Github Authentication`: https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/about-authentication-to-github
+.. _`documentation page on Github Authentication`:
 .. _`documentation page on authentication methods`: https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/about-authentication-to-github
 .. _`ssh-agent`: https://www.ssh.com/ssh/agent
 .. _`Connecting to GitHub with SSH`: https://docs.github.com/en/github/authenticating-to-github/connecting-to-github-with-ssh

diff --git a/doc/nrf/releases_and_maturity.rst b/doc/nrf/releases_and_maturity.rst
@@ -28,4 +28,3 @@ If an issue is found in a release after it has taken place, those issues are lis
    releases_and_maturity/repository_revisions
    releases_and_maturity/software_maturity
    releases_and_maturity/abi_compatibility
-   releases_and_maturity/known_issues
diff --git a/doc/nrf/releases_and_maturity/migration_guides.rst b/doc/nrf/releases_and_maturity/migration_guides.rst
@@ -9,10 +9,18 @@ Migration guides are also provided for major functionality updates.
 .. note::
     |migration_contact_devzone|
 
-.. toctree::
-   :maxdepth: 1
-   :glob:
-   :reversed:
-   :caption: Subpages:
+* `Migrating from multi-image builds to sysbuild`_
+* `Migrating to the current hardware model`_
+* `Migration guide for nRF Connect SDK v2.9.0`_
+* `Migration guide for nRF Connect SDK v2.8.0`_
+* `Migration guide for nRF Connect SDK v2.7.0`_
+* `Migration guide for nRF Connect SDK v2.6.0`_
+* `Migration guide for nRF Connect SDK v2.5.0`_
+* `Migration guide for nRF Connect SDK v2.0.0`_
 
-   migration/*
+For nRF54H20 customer sampling participants:
+
+* `Migration notes for nRF Connect SDK v2.7.99-cs2 and the nRF54H20 DK`_
+* `Migration notes for nRF Connect SDK v2.7.99-cs1 and the nRF54H20 DK`_
+* `Migration notes for nRF Connect SDK v2.7.0 for nRF54H20 DK users`_
+* `Migration guide for nRF Connect SDK v2.6.99_cs2 for v2.4.99-cs3 users`_
diff --git a/doc/nrf/releases_and_maturity/release_notes.rst b/doc/nrf/releases_and_maturity/release_notes.rst
@@ -10,17 +10,16 @@ This page is included only in the latest documentation, because it might contain
 
 .. note::
    A "99" at the end of the version number of this documentation indicates continuous updates on the main branch since the previous major.minor release.
-   When looking at this latest documentation, be aware of the following aspects:
+   When looking at this latest documentation, be aware of the following aspect:
 
-   * Changes between releases are tracked on the :ref:`ncs_release_notes_changelog` page, but the main branch might contain additional changes that are not listed on that page.
    * The release note pages that are available in the latest documentation might differ slightly from the release notes that were included in the respective |NCS| release at its release date.
      Therefore, to see the official version of the release notes for a specific |NCS| release, switch to the documentation for the corresponding |NCS| version using the selector in the upper left corner.
 
 .. toctree::
    :maxdepth: 1
    :caption: Subpages:
 
-   releases/release-notes-changelog
+   releases/release-notes-2.9.0
    releases/release-notes-2.8.0
    releases/release-notes-2.7.99-cs2
    releases/release-notes-2.7.99-cs1