--- /dev/null
+What's new in Tornado 5.0.1
+===========================
+
+Apr 7, 2018
+-----------
+
+Bug fixes
+~~~~~~~~~
+
+- Fixed a memory leak when `.IOLoop` objects are created and destroyed.
+- If `.AsyncTestCase.get_new_ioloop` returns a reference to a
+ preexisting event loop (typically when it has been overridden to
+ return `.IOLoop.current()`), the test's ``tearDown`` method will not
+ close this loop.
+- Fixed a confusing error message when the synchronous `.HTTPClient`
+ fails to initialize because an event loop is already running.
+- `.PeriodicCallback` no longer executes twice in a row due to
+ backwards clock adjustments.