diff --git a/CHANGES b/CHANGES
index 56bf28b0..31384100 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,10 +4,12 @@ XXX
 
 CHANGES FROM 2.9 to 3.0
 
-* Add an addition form of string syntax in the configuration file - {}. This
-  means commands that take other commands as string arguments can be expressed
-  more clearly and without additional escaping. This means that a literal { and
-  } must now be escaped or quoted.
+* INCOMPATIBLE: Add a new {} syntax to the configuration file. This is a string
+  similar to single quotes but also includes newlines and allows commands that
+  take other commands as string arguments to be expressed more clearly and
+  without additional escaping.
+
+  A literal { and } must now be escaped or quoted, for example '{' as '}'.
 
 * New <, >, <= and >= comparison operators for formats.