The iPhone 5 might be a little thinner and tapered than iPhone 4, according to 9to5mac. This comes after they received a leaked iPhone 5 silicon case from a case manufacturer. Earlier this year, 9to5mac also received some nearly accurate schematics of the iPad 2 from a similar source, before its release.
The case mold schematics hints a larger screen and a bigger Home button for the next generation iPhone. Meanwhile, if these rumours are true, then the next generation iPhone will NOT be having a curved glass screen(as rumored before) because the case clearly indicates a rectangular design.
Whether these rumours are true or not, we will find out in September this year when the new iPhone is expected to be released. In the mean while, check out our complete iPhone 5 rumour roundup.