diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index ad6d314..564ff72 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -721,6 +721,11 @@
    Here, we create two instances of :class:`WidgetTestCase`, each of which runs a
    single test.
 
+   .. versionchanged::
+      `TestCase` can be instantiated successfully without providing a method
+      name. This makes it easier to experiment with `TestCase` from the
+      interactive interpreter.
+
    *methodName* defaults to :meth:`runTest`.
 
    :class:`TestCase` instances provide three groups of methods: one group used