Advanced deprecation warnings for Django 2.0.

django/utils/deprecation.py

@@ -4,15 +4,15 @@ import inspect
 import warnings
 
 
-class RemovedInDjango20Warning(DeprecationWarning):
+class RemovedInDjango30Warning(PendingDeprecationWarning):
     pass
 
 
-class RemovedInDjango21Warning(PendingDeprecationWarning):
+class RemovedInDjango21Warning(DeprecationWarning):
     pass
 
 
-RemovedInNextVersionWarning = RemovedInDjango20Warning
+RemovedInNextVersionWarning = RemovedInDjango21Warning
 
 
 class warn_about_renamed_method(object):

docs/internals/deprecation.txt

@@ -7,6 +7,14 @@ in a backward incompatible way, following their deprecation, as per the
 :ref:`deprecation policy <internal-release-deprecation-policy>`. More details
 about each item can often be found in the release notes of two versions prior.
 
+.. _deprecation-removed-in-3.0:
+
+3.0
+---
+
+See the :ref:`Django 2.0 release notes<deprecated-features-2.0>` for more
+details on these changes.
+
 .. _deprecation-removed-in-2.1:
 
 2.1

tests/runtests.py

@@ -20,12 +20,12 @@ from django.test.utils import get_runner
 from django.utils import six
 from django.utils._os import upath
 from django.utils.deprecation import (
-    RemovedInDjango20Warning, RemovedInDjango21Warning,
+    RemovedInDjango21Warning, RemovedInDjango30Warning,
 )
 from django.utils.log import DEFAULT_LOGGING
 
 # Make deprecation warnings errors to ensure no usage of deprecated features.
-warnings.simplefilter("error", RemovedInDjango20Warning)
+warnings.simplefilter("error", RemovedInDjango30Warning)
 warnings.simplefilter("error", RemovedInDjango21Warning)
 # Make runtime warning errors to ensure no usage of error prone patterns.
 warnings.simplefilter("error", RuntimeWarning)