Implement PEP 393.
diff --git a/Misc/NEWS b/Misc/NEWS
index b5e5b15..4ac615e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,8 @@
 Core and Builtins
 -----------------
 
+- PEP 393: flexible string representation.
+
 - Issue #13012: The 'keepends' parameter to str.splitlines may now be passed
   as a keyword argument:  "my_string.splitlines(keepends=True)".  The same
   change also applies to bytes.splitlines and bytearray.splitlines.