Google released version 2.0 of Google Earth for iPhone and iPod touch with 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: By logging in directly to your Google Maps account, you can view same maps that you or others have created, using the My Maps interface. All you’ve to do’s click "Save to My Maps", open Earth on iPhone, log in with same account information, and you’ve your same collection of My Maps right in your pocket.
• Browse businesses, photos, and places more easily: Now, when you touch an icon, a small glow appears under your finger to let you know which icon you’ve picked. If your finger touches more than one icon, you'll be taken to a list of all icons, so you can select one you are interested in.
• Finally, also included new languages in this release, bringing the total to 31 languages from the original 18.

More info: Google LatLong blog | Download