diff --git a/Misc/NEWS b/Misc/NEWS
index f24adc5..41a79c8 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Core and builtins
 -----------------
 
+- marshal now shares interned strings. This change introduces
+  a new .pyc magic.
+
 - Bug #966623. classes created with type() in an exec(, {}) don't
   have a __module__, but code in typeobject assumed it would always
   be there.