From the listing:
It's pretty clear that Apple is feeling the heat from the increasing number of GPS and augmented reality applications available from third-party developers and even the advancements that Google has made on their Android platform. This job application definitely shows that Apple is certainly not resting and that work is continuing on the iPhone OS and the applications it offers. While this listing is far more specific than usual, it could be a sign of great things to come.We want to take Maps to the next level, rethink how users use Maps and change the way people find things. We want to do this in a seamless, highly interactive and enjoyable way. We've only just started.