TECHNOLOGY,

Apple is putting the finishing touches to its Watch ahead of an expected launch in March - and has released a test version of the software that will link it to an iPhone.

The latest release of iOS 8.2, expected to be launched within weeks, includes references to the much anticipated watch.

Apple Watch will link via Bluetooth and a special app on user's iPhone. 

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The Apple Watch will link to a special app on the user's iPhone via Bluetooth.

THE THREE TYPES OF APP

The Apple Watch will use three types of app. 

Notifications allow users to take action or respond right from their wrist such as turning the lights off after they've left the house, quickly accessing flight details at the airport, and rerouting their transit when a train or bus is late.

Glances, which quickly show users information they care about most, such as the latest news and sports scores, alarm system status or the next step of a favorite recipe.

Full apps can use a developer's own interface. 

'Inside of the Bluetooth Settings menu is a new panel specifically for pairing an iPhone with the Apple Watch,' said Mark Gurman of 9to5mac.

'Additionally, the instructions inside of the Bluetooth menu specifically indicate that Apple will release a dedicated 'Apple Watch app' for setting up and controlling the wearable device.

Apple has previously said the timepiece will be controlled by a special app. 

Apple Watch users will install an Apple Watch app on their iPhone, which will be used to download apps onto the watch as well as manage Apple Watch settings.

A user’s iPhone is also used to help with computational demands,a nd help preserve the watch's battery life. 

Sources familiar with the product's development say that the device is currently on track to ship in the United States by the end of March, 

So far Apple has refused to reveal exactly when it will be released, although a statement made to Apple employees suggests the release will be in 'the spring.'