Google has updated Google Maps on Android 4 devices to Google Maps 6.5 with a redesigned Navigation home screen to make it easier to enter a new destination or select from recent and favourite locations by swiping left or right.
If your device has a high pixel density screen, such as those on Galaxy Nexus, Galaxy S II, Droid Razr and others, you’ll now get higher resolution map tiles that take better advantage of the pixels-per-inch on your screen. The result is a crisper, less cluttered map that is easier to read:
The update also lets you choose to prioritize a particular transit mode (such as the bus or underground) and route options like the fastest or the recommended one.
Source: Google Mobile Blog