iPhone 5 to have metal back, less than 4-inch display?

Randomly accurate Digitimes and their "upstream sources" are back again with some more rumors on iPhone 5, including changes to both the size of the display and the material used for the back plate:

In addition, iPhone 5's back design will be changed to a metal chassis instead of reinforced-glasses.

The sources added that the iPhone 5 will adopt a 3.5- to 3.7-inch panel with a design to allow the bezel of the panel to become thinner and make the screen look larger.

If you're thinking rumors about iPhone 5 have been all over the place, and wildly contradictory this year, you're not alone. It could be that Apple, as it reportedly has done in the past, had a more ambitious and a more conservative iPhone 5 prototype and elements of both have leaked. It could also be that Apple's rumored 2nd iPhone, the lower-budget iPhone nano is leading to some confusion about which rumors pertain to which devices. Lastly, iPhone 4, which historically should drop in price but stay on the market after iPhone 5 gets introduced, could also get some tweaks -- become an iPhone 4S -- to make it less expensive to produce or even upgrade its processor to a newer A5 so Apple doesn't have to keep two chipsets in production.

We'll only know for certain this October.

[Digitimes, mockup via MacRumors]