Open edX Ulmo - December 2025 Release
#####################################

These are the release notes for the Ulmo release, the 21st community release
of the Open edX Platform, which was be released in December 2025. You can also review details
about :ref:`Open edX Release Notes` or learn more about the `Open edX Platform`_.

.. highlights::

   What's new in Ulmo? Click to read about new features:

   :ref:`Ulmo Product Marketing Notes`

   And for more detail on individual products, refer to :ref:`Ulmo Product Notes`.


.. highlights::

   What's new in Ulmo? Operators and developers, click to read about new
   updates, patches, and configuration options.
   
   :ref:`Ulmo Dev Notes`.

.. toctree::
    :maxdepth: 2

    Ulmo Overview <ulmo/ulmo_marketing_notes>
    Ulmo Release Notes <ulmo/feature_release_notes>
    Ulmo Developer & Operator Release Notes <ulmo/dev_op_release_notes>

.. _Open edX Platform: https://openedx.org



**Maintenance chart**

+--------------+-------------------------------+----------------+--------------------------------+
| Review Date  | Working Group Reviewer        |   Release      |Test situation                  |
+--------------+-------------------------------+----------------+--------------------------------+
| 2025-12-18   | BTR WG                        | Ulmo           | Pass                           |
+--------------+-------------------------------+----------------+--------------------------------+