Recently some pictures just went live about the explanation of the Nexus Prime’s huge 4.65 inch screen. Turns out its really 4.3! As you can see below getting rid of the hardware buttons allows manufacturers to put more screen real-estate, but not for the reason you may be thinking. With the hardware buttons gone on ICS, they are integrated onto the screen, making the screen more usable at 4.3 inches.
Take this with a grain of salt, since the full dimensions of the phone are not fully confirmed.