News about StopIteration as a "sink state".
diff --git a/Misc/NEWS b/Misc/NEWS
index 0a1ce88..f8f3b7f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -6,6 +6,14 @@
Core and builtins
+- All standard iterators now ensure that, once StopIteration has been
+ raised, all future calls to next() on the same iterator will also
+ raise StopIteration. There used to be various counterexamples to
+ this behavior, which could caused confusion or subtle program
+ breakage, without any benefits. (Note that this is still an
+ iterator's responsibility; the iterator framework does not enforce
+ this.)
+
- Ctrl+C handling on Windows has been made more consistent with
other platforms. KeyboardInterrupt can now reliably be caught,
and Ctrl+C at an interative prompt no longer terminates the