The iPhone 5S will reportedly bring a faster processor, improved camera, more storage, a fingerprint scanner, and two new colours: gold and graphite.
The iPhone 5C is expected to feature a plastic casing which will be available in multiple colours (note the multicoloured invite below) and a lower price point.
Of course, iOS 7 will launch alongside the new iPhones. iOS 7 features a completely revamped 'flat' design and numerous new features including Control Center, Notification Center, improved Multitasking, AirDrop, enhanced Photos, Safari, Siri and introduces iTunes Radio, a free Internet radio service based on the music you listen to on iTunes.
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