Garmin has updated their Mapping applications, Navigon and Garmin StreetPilot Onboard. The updates include iPhone 5 screen support (no black bars) and features like transportation options. There is also Apple Maps integration.
A new feature called Last Mile is actually pretty cool. It saves the location where you parked your car. This is useful if you are visiting a busy area where you need to continue on foot. Here are links to each:
Navigon North America
Navigon U.S. West
Garmin N. America