New firmware for the ice>Link Plus has been released so that the new generation of iPods are supported.
ice>Link Plus V2:
Download
ice>Link Plus V4:
Download
I believe that the ice>Link Plus V2 is the shrink-wrap-type, and the V4 is the one in the hard case (also known as the "2006").
For more information, see
this page on the Dension site.