Updated Release Notes.

doc/releasenotes/index.docbook

@@ -258,6 +258,9 @@ Improved application crash report framework, which now also includes source code
 <listitem><para>
 Additional xdg folders support in Kickoff menu.
 </para></listitem>
+<listitem><para>
+A smooth crossfade effect is now available when changing the desktop wallpaper.
+</para></listitem>
 
 </itemizedlist>
 
@@ -272,6 +275,9 @@ Additional xdg folders support in Kickoff menu.
 GTK3/TQt Theme Engine
 </para></listitem>
 <listitem><para>
+Kate Sort plugin
+</para></listitem>
+<listitem><para>
 KControl LDAP Manager
 </para></listitem>
 <listitem><para>