Backend development doesn't seem to be active anymore.

unsupported/hp-photosmart-s20xi.html

@@ -35,8 +35,8 @@
     </p>
     <h2>Comments</h2>
     <p>
-      A <a href="http://sourceforge.net/projects/hps20xi/">backend for this
-      scanner</a> is being developed ("hps20").
+      Someone started writing a <a href="http://sourceforge.net/projects/hps20xi/">backend for this
+      scanner</a>, but the project seems to be dead?.
     </p>
     <p>
       Film scanner for 35 mm film and prints.