FYI,
on the N80IE support page there is a download for any users who are in countries that will be experiencing a change in the normal day/time that DST comes into effect.
It can be found here and is a downloadable .sis file as usual.
While the change in daylight saving time applies to U.S. and Canada, the change may affect users based outside of these countries. Mexico will not be following the new DST 2007 rules with the U.S. and Canada.