diff --git a/docs/LangRef.html b/docs/LangRef.html
index 71faede993a..c0ba49ba28b 100644
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -455,9 +455,10 @@ the future:</p>
   <dd>This calling convention attempts to make calls as fast as possible
   (e.g. by passing things in registers).  This calling convention allows the
   target to use whatever tricks it wants to produce fast code for the target,
-  without having to conform to an externally specified ABI.  This calling
-  convention does not support varargs and requires the prototype of all callees
-  to exactly match the prototype of the function definition.
+  without having to conform to an externally specified ABI.  Implementations of
+  this convention should allow arbitrary tail call optimization to be supported.
+  This calling convention does not support varargs and requires the prototype of
+  all callees to exactly match the prototype of the function definition.
   </dd>
 
   <dt><b>"<tt>coldcc</tt>" - The cold calling convention</b>:</dt>
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index ed2632f9b0f..2845202bf84 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -87,6 +87,8 @@ bug fixes for those problems found since the 1.4 release.</p>
   <li>Configuring LLVM to build targets selectively is now implemented, via the
       <tt>--enable-targets=</tt> option. This feature is documented
       <a href="GettingStarted.html#config">here</a>.</li>
+  <li>LLVM now supports <a href="LangRef.html#callingconv">custom and
+      target-specific calling conventions</a>.</li>
 </ol>
 
 </div>