Did you know: Apple has added Bluetooth 4.2 to iPhone 6, iPhone 6 Plus and iPad Air 2

So what is the benefit of having this latest version of the Bluetooth spec? It's mostly about speed: 4.2 brings a 2.5-fold increase in speeds and a 10-fold increase in data capacity. It also improves on its privacy, security and power efficiency aspects.
All of this coincides with the expected upcoming launch of a new, Bluetooth 4.2-enabled Apple Keyboard, Magic Mouse and Magic Trackpad.
At the same time, the original iPad Air, iPad mini 2, and iPhone 5s all remain on Bluetooth 4.0.
source: 9to5Mac
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