Apple looks set to unveil the iPhone 5 on September 12 if not-so-mysterious invites sent out to journalists are anything to go by.

In true Apple form, the black and white 'save the date' notification consists of the promise ‘It’s almost here’ a tiny company logo and a bold ‘12’ casting a ‘5’ shadow.

In what’s being described as a bid to beat Apple to the punch, a number of tech competitors are holding unveiling conferences of their own this ...