iPhone location data and Google Latitude

When watching the WWDC 2009 Keynote, I wondered how they realized the "Find My iPhone"-Service. In a comment on vowe.net I've found out, that ...
Find My iPhone seems to use the network connection opens for Notification to request the current location of the phone. If you disable notification on your phone, Find my iPhone doesn't work.
Maybe Apple is going to open up that service to 3rd party service providers - like Google Latitude? Having the Browser open for using Google Latitude doesn't seem to me as a viable solution anyway.