Fixed -- Doc'd how to reproduce HttpRequest.is_ajax() in release notes.
@@ -482,6 +482,10 @@ Miscellaneous
the new :meth:`.HttpRequest.accepts` method if your code depends on the
client ``Accept`` HTTP header.
+ If you are writing your own AJAX detection method, ``request.is_ajax()`` can
+ be reproduced exactly as
+ ``request.headers.get('x-requested-with') == 'XMLHttpRequest'``.
+
* The encoding format of cookies values used by
:class:`~django.contrib.messages.storage.cookie.CookieStorage` is different
from the format generated by older versions of Django. Support for the old
