Today, we're proud to announce version 2.0 of Google Earth for iPhone. We've added some exciting new features, including the ability to view maps that you create on your desktop computer right from your iPhone, explore the app in new languages, and improved icon selection and performance.
View your maps wherever you go
Have you ever wanted to view a custom map with Google Earth on your iPhone? Well, now you can. By logging in directly to your Google Maps account, you can view the same maps that you or others have created, using the My Maps interface. Maybe you're on a trip and want to see where Tony Wheeler, the co-founder of Lonely Planet, most likes to travel. Or perhaps you're walking around looking for a restaurant and you want to see where world-famous chef Ferran Adrià likes to eat. All you have to do is click "Save to My Maps", open Earth on the iPhone, log in with the same account information, and voilà, you have your same collection of My Maps right in your pocket.
It's fun to create and view your own maps as well.

Official Google Mobile Blog: An update to Google Earth for the iPhone