Summary: Google tonight released an update to Google Maps for iOS making it a universal app that now supports the iPad's native resolution. Finally.
The new Google Maps for iOS (free, App Store) just landed and it has native iPad support for the first time. In additional to supporting the iPad's larger screen, the new version of Google Maps includes live traffic and road incident reports. The new version of Maps also offers indoor directions and maps for malls, airports, transit stations, and more.
According to MacRumors Google Maps 2.0 for iOS does not include on-the-fly rerouting (like it does on Android), but Google has said that it plans to add the feature in the future.
Here's the full changelog of the new features in v2.0:
New design for iPad

According to MacRumors Google Maps 2.0 for iOS does not include on-the-fly rerouting (like it does on Android), but Google has said that it plans to add the feature in the future.
Here's the full changelog of the new features in v2.0:
New design for iPad