Apple rumor-mill regular Digitimes is reporting that sources from “upstream panel suppliers” have revealed that the iPhone 5 will feature an all-metal chassis, as well as a screen that is less than 4-inches.

Despite rumors about iPhone 5 featuring a 4.2-inch panel circulating within the IT market for a while, following a leak from Apple’s website in Switzerland in early August, sources from upstream panel suppliers have recently revealed that the iPhone 5’s panel size will still be less than 4-inch.

The rumored specifications of the next-generation iPhone include an 8MP camera, HD video recording and A5 dual core CPU, however there seems to be a growing feeling that there is unlikely to be a dramatic change in design from the iPhone 4.

We’re going to take this rumor with a grain of salt, as Digitimes quoted the “leak from Apple’s website in Switzerland” within the same report – as the video leak was clearly a fake.