Google just pushed out an update to the “Maps for Android” app that brings new high-resolution map tiles for pixel dense displays, a new look for Navigation on Android 4.0, and the ability to set a preferred mode of transit for directions.
New high-res map on the right, previous map on the left
In addition to a redesigned home screen for the Navigation feature of the app on Android 4.0 devices, the new higher resolution map tiles provide “a crisper, less cluttered map that is easier to read.” Google noted this would allow you to take full advantage of the pixel density of displays on devices like the Galaxy Nexus, Galaxy S II, and Droid Razr.
The high-res tiles will appear when visiting new locations on the map, but you will have to clear the cache in Map settings for previously visited locations. Google explained the benefits: