Although no significant changes will be done to the UI, the new design should shave 2.5mm off the current thickness, resulting in a 9.1mm slim candybar – Great success! In addition, the rumors point out that some new materials would be used, for more high-end feeling.
For its 3G, the second-gen iPhone is expected to use the Infineon S-GOLD3H chipset, which has support for HSDPA 7.2Mbps. Additionally, it can be used with up to 5-megapixel camera modules, so we may see some improvement in this aspect. However, a really great camera is not likely to be integrated in the “music phone”.