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iOS 8 spotted running on the iPhone 5S

Ahead of this June’s expected iOS 8 unveiling, Apple’s next-gen operating system has been spotted running on the iPhone 5S.

Despite the iOS 7 replacing software not set to be officially confirmed for a number of months, an early build of the mobile operating system has been caught in the wild, adding backing to a range of previously leaked features.

Surfacing courtesy of PhoneArena, which has attributed the leaked shots to a tipster acting under a pseudonym, the early look at iOS 8 has again suggested that the much mooted ‘Healthbook’ application is lined up for inclusion.

A software package that is to act as a precursor to the Apple Watch and bring a range of new health credentials to Apple’s smartphones and tablets, Healthbook will allow users to correlate data from a range of fitness and wellbeing applications in one centralised location.

As well as feeding in app data, the Healthbook software, which will work with steps data, heart rate details and calorie counters will also be compatible with a variety of third-party fitness peripherals.

Further details teased by the latest iOS 8 leak include the previously tipped ‘Preview’, ‘TextEdit’ and ‘Tips’ features as well as a questionable ‘Watch Utility’ application.

Although no details have been offered on what the Watch Utility app will entail, its inclusion appears to offer further backing to the expectation of an Apple iWatch release to rival the Samsung Gear 2 and upcoming LG G Watch.

Read More: iPhone 6 rumours

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