Whether the information is simply speculation or not, the details actually make sense when you look at Samsung’s Galaxy S and Galaxy S II smartphones. Both were top sellers for Samsung and have helped the company compete with Apple for the smartphone sales crown. Each was a flagship Android handset combining capable hardware with Samsung’s custom user interface.
I’d expect the Galaxy S III to also use Samsung’s Super AMOLED display technology with resolution at least comparable to, if not better than the 1280 x 720 screen on the Galaxy Nexus handset. That would also imply a large screen-size; I’ll go for 4.5-inches as a best guess.