Convert iterator __len__() methods to a private API.
diff --git a/Misc/NEWS b/Misc/NEWS
index 00bd247..409126a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,10 @@
 Core and builtins
 -----------------
 
+- All iterators now have a Boolean value of true.  Formerly, some iterators
+  supported a __len__() method which evaluated to False when the iterator
+  was empty.
+
 - On 64-bit platforms, when __len__() returns a value that cannot be
   represented as a C int, raise OverflowError.