diff --git a/documentation/RELEASE_NOTES.html b/documentation/RELEASE_NOTES.html
index efa1d7340..2fad317d3 100644
--- a/documentation/RELEASE_NOTES.html
+++ b/documentation/RELEASE_NOTES.html
@@ -12,6 +12,13 @@
 
 <h2 align="center">Changes since 3.14.6</h2>
 
+<h4>epicsThreadCreate Stacksize Posix</h4>
+<p>The posix implementation of epicsThreadCreate now makes pthread
+calls to set the stack size. The sizes for (small,medium,large) stack
+sizes are (128K,256K,512K). This is used for at least the following:
+linux, solaris, HPUX, Darwin). Doing this allows creation of many more
+threads os most systems.</p>
+
 <h4>dbNotifyCancel</h4>
 <p>dbNotifyCancel now waits if the userCallback is active when dbNotifyCancel
 is called. Previously it just returned. NOTE CAREFULLY. This means