django/docs/releases/6.0.txt

============================================
Django 6.0 release notes - UNDER DEVELOPMENT
============================================

*Expected December 2025*

Welcome to Django 6.0!

These release notes cover the :ref:`new features <whats-new-6.0>`, as well as
some :ref:`backwards incompatible changes <backwards-incompatible-6.0>` you'll
want to be aware of when upgrading from Django 5.2 or earlier. We've
:ref:`begun the deprecation process for some features
<deprecated-features-6.0>`.

See the :doc:`/howto/upgrade-version` guide if you're updating an existing
project.

Python compatibility
====================

Django 6.0 supports Python 3.12 and 3.13. We **highly recommend** and only
officially support the latest release of each series.

The Django 5.2.x series is the last to support Python 3.10 and 3.11.

Third-party library support for older version of Django
=======================================================

Following the release of Django 6.0, we suggest that third-party app authors
drop support for all versions of Django prior to 5.2. At that time, you should
be able to run your package's tests using ``python -Wd`` so that deprecation
warnings appear. After making the deprecation warning fixes, your app should be
compatible with Django 6.0.

.. _whats-new-6.0:

What's new in Django 6.0
========================

Minor features
--------------

:mod:`django.contrib.admin`
~~~~~~~~~~~~~~~~~~~~~~~~~~~

* ...

:mod:`django.contrib.admindocs`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* The new :attr:`.AdminSite.password_change_form` attribute allows customizing
  the form used in the admin site password change view.

:mod:`django.contrib.auth`
~~~~~~~~~~~~~~~~~~~~~~~~~~

* The default iteration count for the PBKDF2 password hasher is increased from
  1,000,000 to 1,200,000.

:mod:`django.contrib.contenttypes`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* ...

:mod:`django.contrib.gis`
~~~~~~~~~~~~~~~~~~~~~~~~~

* The new :attr:`.GEOSGeometry.hasm` property checks whether the geometry has
  the M dimension.

* The new :class:`~django.contrib.gis.db.models.functions.Rotate` database
  function rotates a geometry by a specified angle around the origin or a
  specified point.

: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
~~~~

* ...

Decorators
~~~~~~~~~~

* ...

Email
~~~~~

* ...

Error Reporting
~~~~~~~~~~~~~~~

* ...

File Storage
~~~~~~~~~~~~

* ...

File Uploads
~~~~~~~~~~~~

* ...

Forms
~~~~~

* ...

Generic Views
~~~~~~~~~~~~~

* ...

Internationalization
~~~~~~~~~~~~~~~~~~~~

* ...

Logging
~~~~~~~

* ...

Management Commands
~~~~~~~~~~~~~~~~~~~

* ...

Migrations
~~~~~~~~~~

* Squashed migrations can now themselves be squashed before being transitioned
  to normal migrations.

Models
~~~~~~

* :doc:`Constraints </ref/models/constraints>` now implement a ``check()``
  method that is already registered with the check framework.

* The new ``order_by`` argument for :class:`~django.db.models.Aggregate` allows
  specifying the ordering of the elements in the result.

* The new :attr:`.Aggregate.allow_order_by` class attribute determines whether
  the aggregate function allows passing an ``order_by`` keyword argument.

* The new :class:`~django.db.models.StringAgg` aggregate returns the input
  values concatenated into a string, separated by the ``delimiter`` string.
  This aggregate was previously supported only for PostgreSQL.

* The :meth:`~django.db.models.Model.save` method now raises a specialized
  :exc:`Model.NotUpdated <django.db.models.Model.NotUpdated>` exception, when
  :ref:`a forced update <ref-models-force-insert>` results in no affected rows,
  instead of a generic :exc:`django.db.DatabaseError`.

Requests and Responses
~~~~~~~~~~~~~~~~~~~~~~

* ...

Security
~~~~~~~~

* ...

Serialization
~~~~~~~~~~~~~

* ...

Signals
~~~~~~~

* ...

Templates
~~~~~~~~~

* The new variable ``forloop.length`` is now available within a :ttag:`for`
  loop.

Tests
~~~~~

* ...

URLs
~~~~

* ...

Utilities
~~~~~~~~~

* ...

Validators
~~~~~~~~~~

* ...

.. _backwards-incompatible-6.0:

Backwards incompatible changes in 6.0
=====================================

Database backend API
--------------------

This section describes changes that may be needed in third-party database
backends.

* ``BaseDatabaseCreation.create_test_db(serialize)`` is deprecated. Use
  ``serialize_db_to_string()`` instead.

* :class:`~django.db.backends.base.schema.BaseDatabaseSchemaEditor` and
  PostgreSQL backends no longer use ``CASCADE`` when dropping a column.

Dropped support for MariaDB 10.5
--------------------------------

Upstream support for MariaDB 10.5 ends in June 2025. Django 6.0 supports
MariaDB 10.6 and higher.

Dropped support for Python < 3.12
---------------------------------

Because Python 3.12 is now the minimum supported version for Django, any
optional dependencies must also meet that requirement. The following versions
of each library are the first to add or confirm compatibility with Python 3.12:

* ``aiosmtpd`` 1.4.5
* ``argon2-cffi`` 23.1.0
* ``bcrypt`` 4.1.1
* ``geoip2`` 4.8.0
* ``Pillow`` 10.1.0
* ``mysqlclient`` 2.2.1
* ``numpy`` 1.26.0
* ``PyYAML`` 6.0.2
* ``psycopg`` 3.1.12
* ``psycopg2`` 2.9.9
* ``redis-py`` 5.1.0
* ``selenium`` 4.23.0
* ``sqlparse`` 0.5.0
* ``tblib`` 3.0.0

Miscellaneous
-------------

* The :ref:`JSON <serialization-formats-json>` serializer now writes a newline
  at the end of the output, even without the ``indent`` option set.

.. _deprecated-features-6.0:

Features deprecated in 6.0
==========================

Miscellaneous
-------------

* ``BaseDatabaseCreation.create_test_db(serialize)`` is deprecated. Use
  ``serialize_db_to_string()`` instead.

* The PostgreSQL ``StringAgg`` class is deprecated in favor of the generally
  available :class:`~django.db.models.StringAgg` class.

* The PostgreSQL ``OrderableAggMixin`` is deprecated in favor of the
  ``order_by`` attribute now available on the ``Aggregate`` class.

Features removed in 6.0
=======================

These features have reached the end of their deprecation cycle and are removed
in Django 6.0.

See :ref:`deprecated-features-5.0` for details on these changes, including how
to remove usage of these features.

* Support for passing positional arguments to ``BaseConstraint`` is removed.

* The ``DjangoDivFormRenderer`` and ``Jinja2DivFormRenderer`` transitional form
  renderers are removed.

* ``BaseDatabaseOperations.field_cast_sql()`` is removed.

* ``request`` is required in the signature of ``ModelAdmin.lookup_allowed()``
  subclasses.

* Support for calling ``format_html()`` without passing args or kwargs is
  removed.

* The default scheme for ``forms.URLField`` changed from ``"http"`` to
  ``"https"``.

* The ``FORMS_URLFIELD_ASSUME_HTTPS`` transitional setting is removed.

* The ``django.db.models.sql.datastructures.Join`` no longer fallback to
  ``get_joining_columns()``.

* The ``get_joining_columns()`` method of ``ForeignObject`` and
  ``ForeignObjectRel`` is removed.

* The ``ForeignObject.get_reverse_joining_columns()`` method is be removed.

* Support for ``cx_Oracle`` is removed.

* The ``ChoicesMeta`` alias to ``django.db.models.enums.ChoicesType`` is
  removed.

* The ``Prefetch.get_current_queryset()`` method is removed.

* The ``get_prefetch_queryset()`` method of related managers and descriptors is
  removed.

* ``get_prefetcher()`` and ``prefetch_related_objects()`` no longer fallback to
  ``get_prefetch_queryset()``.

See :ref:`deprecated-features-5.1` for details on these changes, including how
to remove usage of these features.

* ``django.urls.register_converter()`` no longer allows overriding existing
  converters.

* The ``ModelAdmin.log_deletion()`` and ``LogEntryManager.log_action()``
  methods are removed.

* The undocumented ``django.utils.itercompat.is_iterable()`` function and the
  ``django.utils.itercompat`` module is removed.

* The ``django.contrib.gis.geoip2.GeoIP2.coords()`` method is removed.

* The ``django.contrib.gis.geoip2.GeoIP2.open()`` method is removed.

* Support for passing positional arguments to ``Model.save()`` and
  ``Model.asave()`` is removed.

* The setter for ``django.contrib.gis.gdal.OGRGeometry.coord_dim`` is removed.

* The ``check`` keyword argument of ``CheckConstraint`` is removed.

* The ``get_cache_name()`` method of ``FieldCacheMixin`` is removed.

* The ``OS_OPEN_FLAGS`` attribute of
  :class:`~django.core.files.storage.FileSystemStorage` is removed.