Python 3.9 Controller minimum (#78466)

docs/docsite/rst/installation_guide/intro_installation.rst

@@ -15,7 +15,7 @@ Ansible is an agentless automation tool that you install on a single host (refer
 Control node requirements
 =========================
 
-For your control node (the machine that runs Ansible), you can use nearly any UNIX-like machine with Python 3.8 or newer installed. This includes Red Hat, Debian, Ubuntu, macOS, BSDs, and Windows under a `Windows Subsystem for Linux (WSL) distribution <https://docs.microsoft.com/en-us/windows/wsl/about>`_. Windows without WSL is not natively supported as a control node; see `Matt Davis' blog post <http://blog.rolpdog.com/2020/03/why-no-ansible-controller-for-windows.html>`_ for more information.
+For your control node (the machine that runs Ansible), you can use nearly any UNIX-like machine with Python 3.9 or newer installed. This includes Red Hat, Debian, Ubuntu, macOS, BSDs, and Windows under a `Windows Subsystem for Linux (WSL) distribution <https://docs.microsoft.com/en-us/windows/wsl/about>`_. Windows without WSL is not natively supported as a control node; see `Matt Davis' blog post <http://blog.rolpdog.com/2020/03/why-no-ansible-controller-for-windows.html>`_ for more information.
 
 .. _getting_ansible:
 

docs/docsite/rst/porting_guides/porting_guide_core_2.14.rst

@@ -37,6 +37,7 @@ Playbook
 Command Line
 ============
 
+* Python 3.9 on the controller node is a hard requirement for this release. 
 * At startup the filesystem encoding and locale are checked to verify they are UTF-8. If not, the process exits with an error reporting the errant encoding. If you were previously using the ``C`` or ``POSIX`` locale, you may be able to use ``C.UTF-8``. If you were previously using a locale such as ``en_US.ISO-8859-1``, you may be able to use ``en_US.UTF-8``. For simplicity it may be easiest to export the appropriate locale using the ``LC_ALL`` environment variable. An alternative to modifying your system locale is to run Python in UTF-8 mode; See the `Python documentation <https://docs.python.org/3/using/cmdline.html#envvar-PYTHONUTF8>`_ for more information.