The new GPS for mobile phones was launched by Google today. Below are a couple quick quotes from the Beta launch page:
"New! Google Maps with My Location (Beta)
See your location on the map, with or without GPS."
"The My Location feature is available for most web-enabled mobile phones, including Java, Blackberry, Windows Mobile, and Nokia/Symbian devices."
http://www.google.com/mobile/gmm/mylocation/index.html