django/docs/releases/3.1.txt

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============================================
Django 3.1 release notes - UNDER DEVELOPMENT
============================================
*Expected August 2020*
Welcome to Django 3.1!
These release notes cover the :ref:`new features <whats-new-3.1>`, as well as
some :ref:`backwards incompatible changes <backwards-incompatible-3.1>` you'll
want to be aware of when upgrading from Django 3.0 or earlier. We've
:ref:`dropped some features<removed-features-3.1>` that have reached the end of
their deprecation cycle, and we've :ref:`begun the deprecation process for
some features <deprecated-features-3.1>`.
See the :doc:`/howto/upgrade-version` guide if you're updating an existing
project.
Python compatibility
====================
Django 3.1 supports Python 3.6, 3.7, and 3.8. We **highly recommend** and only
officially support the latest release of each series.
.. _whats-new-3.1:
What's new in Django 3.1
========================
Minor features
--------------
:mod:`django.contrib.admin`
~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.admindocs`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.auth`
~~~~~~~~~~~~~~~~~~~~~~~~~~
* The default iteration count for the PBKDF2 password hasher is increased from
180,000 to 216,000.
:mod:`django.contrib.contenttypes`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.gis`
~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.messages`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.postgres`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.redirects`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.sessions`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.sitemaps`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.sites`
~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.staticfiles`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
:mod:`django.contrib.syndication`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* ...
Cache
~~~~~
* ...
CSRF
~~~~
* ...
Email
~~~~~
* ...
File Storage
~~~~~~~~~~~~
* ...
File Uploads
~~~~~~~~~~~~
* ...
Forms
~~~~~
* ...
Generic Views
~~~~~~~~~~~~~
* ...
Internationalization
~~~~~~~~~~~~~~~~~~~~
* ...
Logging
~~~~~~~
* ...
Management Commands
~~~~~~~~~~~~~~~~~~~
* ...
Migrations
~~~~~~~~~~
* ...
Models
~~~~~~
* ...
Requests and Responses
~~~~~~~~~~~~~~~~~~~~~~
* ...
Serialization
~~~~~~~~~~~~~
* ...
Signals
~~~~~~~
* ...
Templates
~~~~~~~~~
* ...
Tests
~~~~~
* ...
URLs
~~~~
* ...
Validators
~~~~~~~~~~
* ...
.. _backwards-incompatible-3.1:
Backwards incompatible changes in 3.1
=====================================
Database backend API
--------------------
This section describes changes that may be needed in third-party database
backends.
* ...
Miscellaneous
-------------
* The cache keys used by :ttag:`cache` and generated by
:func:`~django.core.cache.utils.make_template_fragment_key` are different
from the keys generated by older versions of Django. After upgrading to
Django 3.1, the first request to any previously cached template fragment will
be a cache miss.
.. _deprecated-features-3.1:
Features deprecated in 3.1
==========================
Miscellaneous
-------------
* ...
.. _removed-features-3.1:
Features removed in 3.1
=======================
These features have reached the end of their deprecation cycle and are removed
in Django 3.1.
See :ref:`deprecated-features-2.2` for details on these changes, including how
to remove usage of these features.
* ``django.utils.timezone.FixedOffset`` is removed.
* ``django.core.paginator.QuerySetPaginator`` is removed.
* A model's ``Meta.ordering`` doesn't affect ``GROUP BY`` queries.
* ``django.contrib.postgres.fields.FloatRangeField`` and
``django.contrib.postgres.forms.FloatRangeField`` are removed.
* The ``FILE_CHARSET`` setting is removed.
* ``django.contrib.staticfiles.storage.CachedStaticFilesStorage`` is removed.
* The ``RemoteUserBackend.configure_user()`` method requires ``request`` as the
first positional argument.
* Support for ``SimpleTestCase.allow_database_queries`` and
``TransactionTestCase.multi_db`` is removed.