Release note updates.

docs/releases/next.rst

@@ -25,6 +25,26 @@ In progress
   gracefully.
 * `tornado.auth.OAuthMixin` always sends ``oauth_version=1.0`` in its
   request as required by the spec.
-* Some reference cycles have been broken up (in `tornado.web.RequestHandler`
-  and `tornado.websocket.WebSocketHandler`), allowing for more efficient
-  garbage collection on CPython.
+* Many reference cycles have been broken up throughout the package,
+  allowing for more efficient garbage collection on CPython.
+* `tornado.testing.gen_test` can now be called as ``@gen_test(timeout=60)``
+  to give some tests a longer timeout than others.
+* The environment variable ``ASYNC_TEST_TIMEOUT`` can now be set to
+  override the default timeout for `.AsyncTestCase.wait` and `.gen_test`.
+* Some `.IOLoop` implementations (such as ``pyzmq``) accept objects
+  other than integer file descriptors; these objects will now have
+  their ``.close()`` method called when the ``IOLoop` is closed with
+  ``all_fds=True``.
+* `.HTTPServer` now supports lists of IPs in ``X-Forwarded-For``
+  (it chooses the last, i.e. nearest one).
+* Fixed an exception in `.WSGIContainer` when the connection is closed
+  while output is being written.
+* Silenced some log messages when connections are opened and immediately
+  closed (i.e. port scans).
+* The default `.Resolver` implementation now works on Solaris.
+* Memory is now reclaimed promptly on CPython when an HTTP request
+  fails because it exceeded the maximum upload size.
+* `tornado.options.define` with ``multiple=True`` now works on Python 3.
+* `.Locale.format_date` now works on Python 3.
+* Some internal names used by the template system have been changed;
+  now all "reserved" names in templates start with ``_tt_``.