Flyby I can see limiting to the devices with the nicer GPU but the lack of turn-by-turn on older devices seems odd. My Droid had 3D turn-by-turn navigation whe

Flyby I can see limiting to the devices with the nicer GPU but the lack of turn-by-turn on older devices seems odd. My Droid had 3D turn-by-turn navigation when it was released and that was in October of 2009. I suspect Apple just didn't want to compromise on how detailed the 3D was so they left older devices out.