Flyover and turn-by-turn navigation are a couple of the coolest features within Apple’s new Maps. However, the two highlighted features will only be available on the iPhone 4S, iPad 2, and the new iPad. This leaves the iPhone 4 and first-generation iPad out-to-dry. Apple outlined the news on its website:
Some features may not be available in all countries or all areas. Flyover and turn-by-turn navigation will be available only on iPhone 4S and iPad 2 or later. Cellular data charges may apply.