The iPhone 5 may only be a few months old, but we're already hearing information about a successor, which may be known as the iPhone 5S in keeping with Apple's naming convention.
The early arrival of the iPad 4 and the iPad mini - just eight months after the release of the iPad 3 in March - has meant that Apple still has the ability to surprise and we could well see an iPhone 5S appear earlier than expected.
Nevertheless, it's more likely that the iPhone 5S will hit stores in the latter part of 2013, following the trend set by the iPhone 5 and 4S. It's even possible that Apple will skip the iPhone 5S and hop right on to the iPhone 6.
Apple's past 'S' models have featured the same shell as the core model, though with different features and slightly different tech specs.
The iPhone 5S isn't expected to differentiate itself from the iPhone 5 too drastically, though a better camera and slightly faster processor will surely be part of the package.
iPhone 5S release date
That means the iPhone 5S release date could be as early Spring 2013. However, we believe it's still likely that we'll see another iPhone later in 2013.
But that's not what everybody thinks: the Chinese-language Commercial Times estimates that full commercial production of the rumored iPhone 5S has begun already. That's borne out by further rumors suggesting a March manufacturing start date, followed by a mid-year release.
Digitimes reckons the iPhone 5S release date will be a little later, citing predicted sales targets of relevant component manufacturers. "Apple is expected to introduce its next-generation iPad and iPhone series around the middle of 2013... Component orders placed by Apple, which climbed to high levels prior to the iPhone 5 rollout, will rise again between March and April, the observers indicated."
iMore rumours in early March pointed to the 5S being out in August 2013.
iPhone 5S display
iPhone 5S or iPhone 6 will include a Super HD screen display and camera according to new reports in December 2012. The China Times says a 'Touch On Display' panel is being developed by Taiwanese supplier Innolux with 10 point multi-touch and a 0.5mm thickness. Apparently the site spoke to sources inside Apple's supply chain.
In January 2013 iLounge received information that indicated the handset would sport the same design as the iPhone 5 with the key difference being a beefier camera and larger flash on the back.
That's hardly ground breaking from Apple, with the touted 13MP camera on the 5S hardly bucking the trend considering the Sony Xperia Z already has this and we'd expect the Samsung Galaxy S4 to offer up something similar.
New rumours from January 2013 pointed towards the iPhone 5S having a 13MP camera as well.
Have we already seen the iPhone 5S?
It was reported on 6 December that images of a purported next-generation iPhone have surfaced on French website Nowhereelse.fr, revealing an exterior virtually identical to the current iPhone 5 but with slightly different internals.
According to CP Tech, Apple filed a patent application last month for Wireless Power Utilization, a wireless charging system with near-field magnetic resonance (NFMR). That means we'll get wireless charging at last.
Needless to say, TechRadar will be keeping a close eye on all the iPhone 5S rumors and will bring you the latest developments as they emerge - on this very page.