Last week, Apple released a new iPhone 5 ad that shows off the device as the most-used phone for listening to music. Upon closer inspection, however, it's emerged that the advert may also give us our first glimpse at Apple's rumoured iWatch device.Related StoriesCorning says Gorilla Glass trumps sapphire screens, but the truth is more nuancediPad 5 rumour rollup: Lighter and less filled, September launches, clearance confusion
