According to Economic Daily News which has been told by a Chinese source (translated by Macotakara) that Apple is abandoning the glass backing of the iPhone 4 in favor of an aluminum casing as well as ditching the external antenna design.

Quote :

Decision to design similar to iPod touch instead of using glass is supposed that Apple seems to stop problems which are told widely damages from scratching, difficulties of painting white and weight of glass.

The source also reported that Apple is abandoning the current external antenna design that was plagued with controversy over the “death-grip” signal loss and attenuation issue. Although unclear, it seems that the translation implies that the “antenna will be designed to penetrate cellular and Wi-Fi waves via resin made Apple logo” which Apple actually does have a patent for.

Finally the source noted that Apple will include the new A5 processor in the fifth iteration of the iPhone, the same processor in the new iPad 2. As with all Apple rumors, including those regarding the iPhone 5, take them with a grain of salt. In particular when the source has a shaky record in previously predicting a 7-inch iPad by Christmas 2010.

Via MacRumors