Note python compatibility.

docs/topics/2.2-announcement.md

@@ -10,6 +10,8 @@ Django 1.6's Python 3 support is expected to be officially labeled as 'productio
 
 If you want to start ensuring that your own projects are Python 3 ready, we can highly recommend Django's [Porting to Python 3][porting-python-3] documentation.
 
+Django REST framework's Python 2.6 support now requires 2.6.5 or above, in line with [Django 1.5's Python compatibility][python-compat].
+
 ## Deprecation policy
 
 We've now introduced an official deprecation policy, which is in line with [Django's deprecation policy][django-deprecation-policy].  This policy will make it easy for you to continue to track the latest, greatest version of REST framework.
@@ -147,6 +149,7 @@ From version 2.2 onwards, serializers with hyperlinked relationships *always* re
 [xordoquy]: https://github.com/xordoquy
 [django-python-3]: https://docs.djangoproject.com/en/dev/faq/install/#can-i-use-django-with-python-3
 [porting-python-3]: https://docs.djangoproject.com/en/dev/topics/python3/
+[python-compat]: https://docs.djangoproject.com/en/dev/releases/1.5/#python-compatibility
 [django-deprecation-policy]: https://docs.djangoproject.com/en/dev/internals/release-process/#internal-release-deprecation-policy
 [credits]: http://django-rest-framework.org/topics/credits.html
 [mailing-list]: https://groups.google.com/forum/?fromgroups#!forum/django-rest-framework