Forgot to git add the new file.

docs/releases/next.rst

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+What's new in the next release of Tornado
+=========================================
+
+In progress
+-----------
+
+* `~tornado.options.parse_config_file` now always decodes the config
+  file as utf8 on Python 3.
+* ``tornado.curl_httpclient`` now supports request bodies for ``PATCH``
+  and custom methods.
+* `.RequestHandler.send_error` now supports a ``reason`` keyword
+  argument, similar to `tornado.web.HTTPError`.
+* ``tornado.curl_httpclient`` now supports resubmitting bodies after
+  following redirects for methods other than ``POST``.
+* The build will now fall back to pure-python mode if the C extension
+  fails to build for any reason (previously it would fall back for some
+  errors but not others).
+* The ``context`` argument to `.HTTPServerRequest` is now optional,
+  and if a context is supplied the ``remote_ip`` attribute is also optional.
+* `.IOLoop.call_at` and `.IOLoop.call_later` now always return
+  a timeout handle for use with `.IOLoop.remove_timeout`.
+* `.HTTPServer` now tolerates extra newlines which are sometimes inserted
+  between requests on keep-alive connections.
+* `.HTTPServer` can now use keep-alive connections after a request
+  with a chunked body.
+* `.SSLIOStream` will no longer consume 100% CPU after certain error conditions.
+* `.SSLIOStream` no longer logs ``EBADF`` errors during the handshake as they
+  can result from nmap scans in certain modes.
+* The `tornado.websocket` module now supports compression via the
+  "permessage-deflate" extension.  Override
+  `.WebSocketHandler.get_compression_options` to enable on the server
+  side, and use the ``compression_options`` keyword argument to
+  `.websocket_connect` on the client side.
+* If the callback of a `.PeriodicCallback` returns a `.Future`, any error
+  raised in that future will now be logged (similar to the behavior of
+  `.IOLoop.add_callback`).