diff --git a/doc/release-notes/mzscheme/MzScheme_4.txt b/doc/release-notes/mzscheme/MzScheme_4.txt
index 5348aba2b4..fe4275763d 100644
--- a/doc/release-notes/mzscheme/MzScheme_4.txt
+++ b/doc/release-notes/mzscheme/MzScheme_4.txt
@@ -128,6 +128,9 @@ but we start with an enumeration of changes:
    `scheme/class'. The libraries in the "mzlib" collection remain as
    before.
 
+ - In a syntax pattern of the form `(a ... . b)', `b' is now allowed
+   to match an empty list.
+
 ======================================================================
  Porting Advice
 ======================================================================