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+.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
+
+Release 4.2 (mickledore)
+========================
+
+Migration notes for 4.2 (mickledore)
+------------------------------------
+
+This section provides migration information for moving to the Yocto
+Project 4.2 Release (codename "mickledore") from the prior release.
+
+.. _migration-4.2-python-3.8:
+
+Python 3.8 is now the minimum required Python version version
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~------------
+
+BitBake and OpenEmbedded-Core are now relying on Python 3.8,
+making it a requirement to use a distribution providing at least this
+version, or to use :term:`buildtools`.
+
+.. _migration-4.2-qa-checks:
+
+QA check changes
+~~~~~~~~~~~~~~~~
+
+.. _migration-4.2-misc-changes:
+
+Miscellaneous changes
+~~~~~~~~~~~~~~~~~~~~~
+
+- The ``OEBasic`` signature handler (see :term:`BB_SIGNATURE_HANDLER`) has been
+  removed.
+
+.. _migration-4.2-removed-variables:
+
+Removed variables
+~~~~~~~~~~~~~~~~~
+
+The following variables have been removed:
+- ``SERIAL_CONSOLE``, deprecated since version 2.6, replaced by :term:``SERIAL_CONSOLES``.
+
+.. _migration-4.2-removed-recipes:
+
+Removed recipes
+~~~~~~~~~~~~~~~
+
+The following recipes have been removed in this release:
+