We still wait to see the first iPhone released, and the first tidbits of information are slowly appearing on the Web about the second generation. Apparently, the next iPhone will debut in spring 2008 at MacWorld, and will come with a built-in GPS.
For the future iPhone, Apple will most likely use Assisted GPS technology, which makes determining of the current location much faster, especially in urban areas where tall buildings can disturb the signal. Furthermore, when the GPS-enabled iPhone hits the daylight, I bet it will run the latest version of Google Maps with GPS support. Hopefully, by then Apple will also add a 3G radio on it. (via: navigadget)