diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -1646,35 +1646,36 @@ standard local time.
 Applications that can't bear such ambiguities should avoid using hybrid
 :class:`tzinfo` subclasses; there are no ambiguities when using :class:`timezone`,
 or any other fixed-offset :class:`tzinfo` subclass (such as a class representing
 only EST (fixed offset -5 hours), or only EDT (fixed offset -4 hours)).
 
 .. seealso::
 
    `pytz <http://pypi.python.org/pypi/pytz/>`_
-      The standard library has no :class:`tzinfo` instances except for UTC, but
-      there exists a third-party library which brings the *IANA timezone
-      database* (also known as the Olson database) to Python: *pytz*.
-
-      *pytz* contains up-to-date information and its usage is recommended.
+      The standard library has :class:`timezone` instances for handling
+      arbitrary fixed offsets from UTC, but *pytz* brings the *IANA timezone
+      database* (also known as the Olson database) to Python and its usage
+      is recommended.
 
    `IANA timezone database <http://www.iana.org/time-zones>`_
       The Time Zone Database (often called tz or zoneinfo) contains code and
       data that represent the history of local time for many representative
       locations around the globe. It is updated periodically to reflect changes
       made by political bodies to time zone boundaries, UTC offsets, and
       daylight-saving rules.
 
 
 .. _datetime-timezone:
 
 :class:`timezone` Objects
 --------------------------
 
+.. versionadded:: 3.2
+
 The :class:`timezone` class is a subclass of :class:`tzinfo`, each
 instance of which represents a timezone defined by a fixed offset from
 UTC.  Note that objects of this class cannot be used to represent
 timezone information in the locations where different offsets are used
 in different days of the year or where historical changes have been
 made to civil time.