doc: 54H EngB + C support drop

Updated docs to mention end of support for 54H20 EngB EngC.

Signed-off-by: Francesco Domenico Servidio <francesco.servidio@nordicsemi.no>

doc/nrf/app_dev/device_guides/working_with_nrf/nrf54h/ug_nrf54h20_gs.rst

@@ -20,13 +20,13 @@ Make sure you have all the required hardware and that your computer has one of t
 Hardware
 ========
 
-* nRF54H20 DK version PCA10175:
-
-  * Engineering B - ranging from v0.8.0 to 0.8.2
-  * Engineering C - v0.8.3 and later revisions
+* nRF54H20 DK version PCA10175 Engineering C - v0.8.3 and later revisions
 
   Check the version number on your DK's sticker to verify its compatibility with the |NCS|.
 
+.. note::
+   |54H_engb_2_8|
+
 * USB-C cable.
 
 Software
@@ -241,10 +241,7 @@ Programming the nRF54H20 SoC binaries
 After programming the BICR, the nRF54H20 SoC requires the provisioning of the nRF54H20 SoC binaries, a bundle containing the precompiled firmware for the Secure Domain and System Controller.
 To program the nRF54H20 SoC binaries to the nRF54H20 DK, do the following:
 
-1. Download the nRF54H20 SoC binaries v0.7.0:
-
-   * `nRF54H20 SoC Binaries v0.7.0 for EngC DKs`_, compatible with the nRF54H20 DK v0.8.3 and later revisions
-   * `nRF54H20 SoC Binaries v0.7.0 for EngB DKs`_, compatible with the nRF54H20 DKs ranging from v0.8.0 to v0.8.2.
+1. Download the `nRF54H20 SoC Binaries v0.7.0 for EngC DKs`_, compatible with the nRF54H20 DK v0.8.3 and later revisions.
 
    .. note::
       On MacOS, ensure that the ZIP file is not unpacked automatically upon download.
@@ -288,15 +285,9 @@ To build and program the sample to the nRF54H20 DK, complete the following steps
 1. Connect the nRF54H20 DK to your computer using the **DEBUGGER** port on the DK.
 #. Open nRF Connect for Desktop, navigate to the Toolchain Manager, select the version |release| toolchain, and click the :guilabel:`Open terminal` button.
 #. In the terminal window, navigate to the :file:`zephyr/samples/sysbuild/hello_world` folder containing the sample.
-#. Build the sample for application and radio cores by running the following commands:
-
-   * For Engineering C (DKs 0.8.3 and later revisions)::
-
-         west build -p -b nrf54h20dk/nrf54h20/cpuapp -T sample.sysbuild.hello_world.nrf54h20dk_cpuapp_cpurad .
-
-   * For Engineering B (DKs from v0.8.0 to 0.8.2)::
+#. Build the sample for application and radio cores by running the following command::
 
-         west build -p -b nrf54h20dk@0.8.0/nrf54h20/cpuapp -T sample.sysbuild.hello_world.nrf54h20dk_cpuapp_cpurad .
+      west build -p -b nrf54h20dk/nrf54h20/cpuapp -T sample.sysbuild.hello_world.nrf54h20dk_cpuapp_cpurad .
 
 You can now program the sample.
 If you have multiple Nordic Semiconductor devices, make sure that only the nRF54H20 DK you want to program is connected.

doc/nrf/releases_and_maturity/abi_compatibility.rst

@@ -28,6 +28,8 @@ The following table illustrates ABI compatibility between different versions of
 
    * - |NCS| versions
      - Compatible nRF54H20 SoC binaries version
+   * - |NCS| v2.9.0
+     - `nRF54H20 SoC Binaries v0.7.0 for EngC DKs`_, compatible with the nRF54H20 DK v0.8.3 and later revisions.
    * - |NCS| v2.8.0
      - `nRF54H20 SoC Binaries v0.7.0 for EngC DKs`_, compatible with the nRF54H20 DK v0.8.3 and later revisions.
        `nRF54H20 SoC Binaries v0.7.0 for EngB DKs`_, compatible with the nRF54H20 DKs ranging from v0.8.0 to v0.8.2.

doc/nrf/releases_and_maturity/migration/migration_guide_2.9.rst

@@ -28,13 +28,42 @@ Required changes
 
 The following changes are mandatory to make your application work in the same way as in previous releases.
 
+nRF54H20
+========
+
+This section describes the changes specific to the nRF54H20 SoC and DK support in the |NCS|.
+For more information on changes related to samples and applications usage on the nRF54H20 DK, see :ref:`migration_2.9_required_nrf54h`.
+
+DK compatibility
+----------------
+
+.. toggle::
+
+  * The |NCS| v2.9.0 is compatible only with the following versions of the nRF54H20 DK, PCA10175: Engineering C - v0.8.3 and later revisions.
+    The nRF54H20 DK Engineering A and Engineering B (up to v0.8.2) are no longer compatible with the |NCS| v2.9.0.
+
+    Check the version number on your DK's sticker to verify its compatibility with the |NCS|.
+
+Dependencies
+------------
+
+The following required dependencies for the nRF54H20 SoC and DK have been updated.
+
+
 Samples and applications
 ========================
 
 This section describes the changes related to samples and applications.
 
 |no_changes_yet_note|
 
+.. _migration_2.9_required_nrf54h:
+
+nRF54H20
+--------
+
+|no_changes_yet_note|
+
 Libraries
 =========
 

doc/nrf/shortcuts.txt

@@ -262,5 +262,4 @@
 
 .. |filter_samples_by_board| replace:: If you want to list samples available for one or more specific boards, `use the nRF Connect for Visual Studio Code extension to filter them <Browse samples_>`_.
 
-.. |54H_engb_2_8| replace:: When using the nRF54H20 DK Engineering B (from v0.8.0 to 0.8.2), you must build samples and applications using the board revision 0.8.0 with the ``<board>@<revision>`` syntax.
-   For example, ``nrf54h20dk@0.8.0/nrf54h20/cpuapp`` when building for the application core, or ``nrf54h20dk@0.8.0/nrf54h20/cpurad`` when building for the radio core.
+.. |54H_engb_2_8| replace:: The nRF54H20 DK Engineering A and B (up to version 0.8.2) are no longer supported starting with |NCS| v2.9.0.