diff --git a/doc/source/changelog/1426.maintenance.md b/doc/source/changelog/1426.maintenance.md
new file mode 100644
index 000000000..dca30c56c
--- /dev/null
+++ b/doc/source/changelog/1426.maintenance.md
@@ -0,0 +1 @@
+Update migration guide for \`v11\` release
diff --git a/doc/source/migrations/index.rst b/doc/source/migrations/index.rst
index 1e548534c..124f9b61e 100644
--- a/doc/source/migrations/index.rst
+++ b/doc/source/migrations/index.rst
@@ -16,11 +16,35 @@ Version ``v11``
   ``release-pypi-test`` actions no longer support publishing packages to PyPI using tokens. As a result, they
   are deprecated starting with ``v11``. Projects must migrate to trusted publishing. Contact the PyAnsys Core
   Team at pyansys.core@ansys.com for enabling trusted publishing for your project and refer to
-  :ref:`release_pypi_trusted_publisher` for setup details.
+  :ref:`release_pypi_trusted_publisher` for setup details. Note that ``release-pypi-private`` is not affected
+  and still supports token-based publishing due to the limitations of the private index.
 
-- **Removal of deprecated input from release-github action:** The ``generate_release_notes`` input of the
-  ``release-github`` action was deprecated in ``v10`` and is completely removed starting with ``v11``.
-  Use the ``generate-release-notes`` parameter instead.
+- **Removal of deprecated inputs from multiple actions:** Several inputs that were previously deprecated
+  have been completely removed:
+
+  - ``generate_release_notes`` removed from ``release-github``. Use ``generate-release-notes`` instead.
+  - ``toml-version`` removed from ``doc-changelog``, ``doc-deploy-changelog``, ``doc-style``, and
+    ``release-github``.
+  - ``python-version`` and ``use-uv`` removed from ``hk-package-clean-except`` and
+    ``hk-package-clean-untagged``. These actions now use an internally managed Python setup.
+
+**New actions:**
+
+- **Deploy documentation to a custom path:** A new ``doc-deploy-custom-path`` action has been added. It
+  deploys HTML documentation to a user-specified subdirectory of the deployment branch (``gh-pages`` by
+  default). The rendered documentation is available at ``https://<cname>/<custom-path>/``. The action
+  validates the ``custom-path`` input to prevent conflicts with reserved paths used by the other
+  ``doc-deploy-*`` actions (such as ``version`` and ``pull``). See :doc:`../doc-actions/index` for usage details.
+
+**New Features:**
+
+- **Poetry-native install in check-licenses:** For Poetry-based projects, the ``check-licenses`` action
+  now installs the project and its dependency targets through Poetry, aligning with the installation
+  behavior of the other actions. This improves reliability of license checks for Poetry projects. No
+  user-facing input change is required.
+
+- **Minimum permissions documented in examples:** All action examples now also document the minimum GitHub permissions
+  required to run them, making it easier to set up workflows with the correct permissions.
 
 **Migration Steps:**
 
@@ -39,6 +63,43 @@ Version ``v11``
   Although backwards compatibility is maintained, you are advised to set one of the inputs explicitly to avoid
   future breaking changes.
 
+- **Remove references to removed inputs from your workflows:** Search your workflows for references to
+  the inputs listed in the preceding breaking changes section (``generate_release_notes`` on the ``release-github`` action,
+  ``toml-version`` on the ``doc-*`` and ``release-github`` actions, and ``python-version`` / ``use-uv`` on the
+  ``hk-package-clean-*`` actions) and drop them. For example, for ``hk-package-clean-untagged``:
+
+  .. tab-set::
+
+    .. tab-item:: Before
+
+      .. code:: yaml
+
+        - name: "Clean untagged packages"
+          uses: ansys/actions/hk-package-clean-untagged@v10
+          with:
+            package-name: my-package
+            python-version: '3.12'
+            use-uv: true
+
+    .. tab-item:: After
+
+      .. code:: yaml
+
+        - name: "Clean untagged packages"
+          uses: ansys/actions/hk-package-clean-untagged@v11
+          with:
+            package-name: my-package
+
+- **Review usage of still-deprecated inputs:** The following inputs still exist but now emit an
+  ``ERROR``-level deprecation notice (previously ``WARNING``) and are scheduled for removal in ``v12``.
+  Migrate away from them now to avoid disruption in the next major release:
+
+  - ``use-conventional-commits`` on the ``doc-changelog`` action: use ``use-pull-request-title`` instead.
+  - ``tomli-version`` on the ``doc-changelog``, ``doc-deploy-changelog``, ``doc-style``, and ``release-github`` actions.
+  - ``towncrier-version`` and ``tomlkit-version`` on the ``doc-changelog``, ``doc-deploy-changelog``,
+    and ``release-github`` actions. ``tomlkit-version`` is also affected in the ``doc-style`` action.
+  - ``pypandoc-binary-version`` on the ``release-github`` action.
+
 Version ``v10.3``
 -----------------