Acrossair, the developer of the Nearest Tube app was told by Apple that its app would be approved once 3.1 goes live, which the developer expects should be around early September.
The app allows you to point your iPhone camera out in front of you, and have real time data appear onto the live image in front of you, directing you – if you hadn't guessed – to your nearest tube stations
Up until now, AR apps haven't been able to run on un-jailbroken iPhones as they use unpublished APIs that prevent them making their way to the App Store.
There's been no word from Apple on an official release date of 3.1, but we'll keep you up to date with anything we hear as soon as we get it. In the meantime, let us know what you think to augmented reality below, and check out our five things you need to know about augmented reality to get up to scratch with AR.