New environment variable PYTHONIOENCODING.
diff --git a/Misc/NEWS b/Misc/NEWS
index 21465f2..790e980 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@
 Core and Builtins
 -----------------
 
+- New environment variable PYTHONIOENCODING.
+
 - Patch #2488: Add sys.maxsize.
 
 - Issue #2353: file.xreadlines() now emits a Py3k warning.