diff --git a/general-info/release-19b.txt b/general-info/release-19b.txt
index 4f21c1ec32494b51ead8bef7a43d79b9848e9684..0e04123653b1d95d2ca33dcb2b610a24ba9eaae3 100644
--- a/general-info/release-19b.txt
+++ b/general-info/release-19b.txt
@@ -69,6 +69,8 @@ New in this release:
         streams.  EXT:READ-VECTOR and EXT:WRITE-VECTOR also
         implemented.  This is somewhat experimental right now, and may
         change slightly in a future version.
+      - Loading fasls compiled for a different version of CMUCL will
+        now signal an EXT:INVALID-FASL error instead a generic error.
 
   * Numerous ANSI compliance fixes:
       - FILE-AUTHOR should signal errors appropriately.