This unofficial rendering circulated last week. Samsung has been sampling a number of "Edge-to-Edge" Displays also known as "No Bezel" displays. The concept is that the display covers almost the entire front.
If you scale the mockup to the size of a 4.5" Samsung Galaxy S II Epic 4G Touch, you get a 5.25" display.
A 4.3" AT&T Galaxy S II could have a 5.01" Edge-to-Edge display.
Last edited: