Not a good sign for all those hoping for bluetooth wireless mice and other bluetooth ready items to use on older macs. It seems it won't effect the new ones that have the Bluetooth installed in the computers.
http://www.macuser.co.uk/guest/php3/openframe.php3?page=newnews/newsarticle.php3?id=2014
http://www.macuser.co.uk/guest/php3/openframe.php3?page=newnews/newsarticle.php3?id=2014