Sharp, LG, and Japan Display are all slated to be supplying Apple with displays for the device.
The next iPhone is expected to resemble the iPhone 5 but will pack improved internal components, making it an "iPhone 5S" of sorts.
We've heard a variety of rumors surrounding what it may or may not have – it's all unconfirmed, of course, but look for multiple color choices, a fingerprint scanner, and an improved camera when the phone launches early this Fall.