You are looking at the mockup (not real device) of
The not-real-iPhone-5 body is thinner than iPhone 4, and goes from thick to thin (like Mac Air). It has a bigger screen up to 3.7-inches while keeping the current resolution. The screen occupy the entire front of the iPhone with almost no bezel. The home button is larger and doing double duty as a gesture area.
Do you like iPhone 5 to look like this? IF this will be the iPhone 5, will you buy?