diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 2e2f85df0..5a78f47ca 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -1,2 +1,7 @@
 The name of the library has changed.  See the Apr 17 ChangeLog for a
 list of what's changed, and the old and new names.
+
+The `o-*' file names have been changed to `o_*' to better match their
+function names and the GNU standards.
+
+The %@ printf directive only works if you are using the GNU C library.