Fixed -- Doc'd that autodector changes might cause generation of no-op migrations.
Follow up to
@@ -392,6 +392,10 @@ Miscellaneous
* Tests that fail to load, for example due to syntax errors, now always match
when using :option:`test --tag`.
+* The migrations autodetector now uses model states instead of model classes.
+ As a side-effect ``makemigrations`` might generate no-op ``AlterField``
+ operations for ``ForeignKey`` fields in some cases.
+
.. _deprecated-features-4.0:
Features deprecated in 4.0
