Added multi-column indexes to the 1.5 release notes.

docs/ref/models/options.txt

@@ -263,10 +263,10 @@ Django quotes column and table names behind the scenes.
 
 ``index_together``
 
-.. versionadded:: 1.5
-
 .. attribute:: Options.index_together
 
+    .. versionadded:: 1.5
+
     Sets of field names that, taken together, are indexed::
 
         index_together = [

docs/releases/1.5.txt

@@ -302,6 +302,10 @@ Django 1.5 also includes several smaller improvements worth noting:
 * The :ref:`cache-based session backend <cached-sessions-backend>` can store
   session data in a non-default cache.
 
+* Multi-column indexes can now be created on models. Read the
+  :attr:`~django.db.models.Options.index_together` documentation for more
+  infomration.
+
 Backwards incompatible changes in 1.5
 =====================================