diff --git a/documentation/RELEASE_NOTES.html b/documentation/RELEASE_NOTES.html
index 572d2a9c3..52843c255 100644
--- a/documentation/RELEASE_NOTES.html
+++ b/documentation/RELEASE_NOTES.html
@@ -9,9 +9,19 @@
 <body lang="en">
 <h1 align="center">EPICS Base Release 3.14.12</h1>
 
+
 <h2 align="center">Changes between 3.14.11 and 3.14.12</h2>
 <!-- Insert new items immediately below here ... -->
 
+<h4>Expanded CALC expressions</h4>
+
+<p>The calc and calcout records can now accept infix expressions up to 79
+characters long, although you have to use long string support to read or write
+any that are more than 39 characters. The postfix interpreter now sports an
+integer literal token as well as the double literal one, which reduces the
+maximum size of a postfix buffer needed for any specific size of infix buffer by
+a factor of 2/3.</p>
+
 <h4>Added Apple iOS target architectures</h4>
 
 <p>Tom Pelaia II and Mark Engbretson contributed build configuration files to
@@ -163,6 +173,7 @@ the <tt>COMMANDLINE_LIBRARY</tt> variable.</p>
 <p>Three new options were added to the <tt>caget</tt> and <tt>camonitor</tt>
 utilities, to allow printing float values (rounded) as hex, octal or binary.</p>
 
+
 <h2 align="center">Changes between 3.14.10 and 3.14.11</h2>
 
 <h4>Time provider on Win32</h4>
