diff -r 5873cfb42ebe Doc/whatsnew/3.6.rst
--- a/Doc/whatsnew/3.6.rst	Tue Feb 02 17:04:56 2016 -0600
+++ b/Doc/whatsnew/3.6.rst	Thu Feb 04 12:40:00 2016 +0530
@@ -217,6 +217,12 @@
   (Contributed by Rose Ames in :issue:`25791`.)
 
 
+Deprecated Python Behavior
+--------------------------
+
+* Raising the :exc:`StopIteration` exception inside a generator will now generate a silent :exc:`DeprecationWarning`, which will trigger a :exc:`RuntimeError` in Python 3.7. See :ref:`PEP 479: Change StopIteration handling inside generators <whatsnew-pep-479>` for details 
+
+
 Removed
 =======
 
diff -r 5873cfb42ebe Lib/test/test_contextlib.py
--- a/Lib/test/test_contextlib.py	Tue Feb 02 17:04:56 2016 -0600
+++ b/Lib/test/test_contextlib.py	Thu Feb 04 12:40:00 2016 +0530
@@ -89,7 +89,7 @@
         def woohoo():
             yield
         try:
-            with self.assertWarnsRegex(PendingDeprecationWarning,
+            with self.assertWarnsRegex(DeprecationWarning,
                                        "StopIteration"):
                 with woohoo():
                     raise stop_exc
diff -r 5873cfb42ebe Lib/test/test_generators.py
--- a/Lib/test/test_generators.py	Tue Feb 02 17:04:56 2016 -0600
+++ b/Lib/test/test_generators.py	Thu Feb 04 12:40:00 2016 +0530
@@ -245,11 +245,11 @@
             yield
 
         with self.assertRaises(StopIteration), \
-             self.assertWarnsRegex(PendingDeprecationWarning, "StopIteration"):
+             self.assertWarnsRegex(DeprecationWarning, "StopIteration"):
 
             next(gen())
 
-        with self.assertRaisesRegex(PendingDeprecationWarning,
+        with self.assertRaisesRegex(DeprecationWarning,
                                     "generator .* raised StopIteration"), \
              warnings.catch_warnings():
 
@@ -268,7 +268,7 @@
         g = f()
         self.assertEqual(next(g), 1)
 
-        with self.assertWarnsRegex(PendingDeprecationWarning, "StopIteration"):
+        with self.assertWarnsRegex(DeprecationWarning, "StopIteration"):
             with self.assertRaises(StopIteration):
                 next(g)
 
diff -r 5873cfb42ebe Lib/test/test_with.py
--- a/Lib/test/test_with.py	Tue Feb 02 17:04:56 2016 -0600
+++ b/Lib/test/test_with.py	Thu Feb 04 12:40:00 2016 +0530
@@ -454,7 +454,7 @@
             with cm():
                 raise StopIteration("from with")
 
-        with self.assertWarnsRegex(PendingDeprecationWarning, "StopIteration"):
+        with self.assertWarnsRegex(DeprecationWarning, "StopIteration"):
             self.assertRaises(StopIteration, shouldThrow)
 
     def testRaisedStopIteration2(self):
@@ -482,7 +482,7 @@
             with cm():
                 raise next(iter([]))
 
-        with self.assertWarnsRegex(PendingDeprecationWarning, "StopIteration"):
+        with self.assertWarnsRegex(DeprecationWarning, "StopIteration"):
             self.assertRaises(StopIteration, shouldThrow)
 
     def testRaisedGeneratorExit1(self):
diff -r 5873cfb42ebe Objects/genobject.c
--- a/Objects/genobject.c	Tue Feb 02 17:04:56 2016 -0600
+++ b/Objects/genobject.c	Thu Feb 04 12:40:00 2016 +0530
@@ -178,7 +178,7 @@
             /* Pop the exception before issuing a warning. */
             PyErr_Fetch(&exc, &val, &tb);
 
-            if (PyErr_WarnFormat(PyExc_PendingDeprecationWarning, 1,
+            if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
                                  "generator '%.50S' raised StopIteration",
                                  gen->gi_qualname)) {
                 /* Warning was converted to an error. */