Garmin numaps program will be going live today. Basically it guarantees you will be getting the newest maps, available by download, for free if a map update occurs within sixty days of purchase of a Garmin nuvi or zumo. If you purchased your zumo or nuvi after August 17 of this year you are eligible for the program. To qualify for the update you will need to register your device within sixty days of the first use of your device. Registration can be done at http://my.garmin.com.
http://www.navigadget.com/index.php/2008/10/15/garmin-numaps