Add a release note TODO

docs/users_guide/7.4.1-notes.xml

@@ -1172,6 +1172,12 @@ Subject: [PATCH 0695/1074] Add an RTS eventlog tracing class for user messages
                 </para>
             </listitem>
 
+            <listitem>
+                <para>
+                    TODO: &lt;&gt;
+                </para>
+            </listitem>
+
             <listitem>
                 <para>
                     <literal>Data.List</literal> has a new function