The former editors of Engadget claim to have some secret source information on the iPhone 5, as posted on their new blog This is My Next.
According to sources, the iPhone 5 will resemble the current iPod touch more than the present iPhone 4. The phone will also supposedly be thinner than the current iPhone 4 and might even have a tapered, teardrop shape like the MacBook Air.
Other interesting bits to this rumor are that the screen size will increase to 3.7-inches of edge-to-edge display, which means almost no bezel. The jump from 3.5- to 3.7-inches, but keeping the same 960x640 resolution, means a density drop from 326 to 312 (a drop of 13ppi). This would, however, still keep it above the 300ppi that Apple claimed would be of Retina Display quality.