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One of the ways pundits and critics alike have highlighted is the ability to make the iPhone's outer bezel thinner by removing it altogether. Having an edge-to-edge display would cut down nearly an inch in width off the device, making it slimmer in the user's hand. The width of the screen likely won't change to retain backwards compatibility, but the shape of the smartphone can change around it.
(Image via CNET — Credit: MacRumors)
Faster A7 processor
A new processor is all but inevitable in the next iPhone. Despite the ongoing legal spat between Samsung and Apple, it's still likely that its main rival in the smartphone space will produce the next-generation chip. Exactly what it offers, though, will remain under wraps until the highly anticipated phone's announcement.
Stronger antenna for simultaneous voice, data
A third antenna would support simultaneous voice and data, allowing users to receive emails while they're on the phone. However, following so-called "Antennagate," where a redesigned metal body appeared to cause a dip in cell signal when the iPhone 4 was held in a particular way, Apple may not want to risk any changes to the device's antenna.