Post: small post about "latest core requirements"

python-core-requirements-changed.rst

@@ -0,0 +1,25 @@
+.. post:: July 7, 2023
+   :tags: builders
+   :author: Manuel
+   :location: BCN
+   :category: Changelog
+
+Python "core requirements" for new projects will install latest version
+=======================================================================
+
+Starting on **August 7, 2023** all new projects imported on Read the Docs
+will install only ``sphinx``, ``mkdocs`` and ``readthedocs-sphinx-ext`` as "core requirements".
+The default behavior will be to install the latest version of these requirements.
+
+Note that previously Read the Docs was installing also
+``jinja``, ``sphinx-rtd-theme``, ``pillow``, ``mock``, ``alabaster``, ``commonmark`` and ``recommonmark``
+specifying particular versions depending on different factors that were confusing for users and hard to debug.
+
+We are moving away from executing commands and installing dependencies on behalf of the users
+and trying to make the build experience on Read the Docs the same as building locally,
+without surprises.
+
+Projects imported before August 7, 2023 will keep the existing behavior and won't be affected by this change.
+If you have a project you want to install the latest version of these requirements,
+you can use a ``requirements.txt`` file to specify their versions, or no version to automatically install the latest version.
+Read more about :doc:`how to use a requirements.txt file in our documentation <readthedocs:config-file/v2>`.