MacRumors uncovered a new section in the legal disclaimers section of iOS 5 called "Map Data" that references several different third-party mapping and naviation companies such as CoreLogic, Getchee, Localeze, and TomTom, among others.
It wouldn't be much of a shock if Apple ditched Google Maps and launched its own mapping service. In recent years, Apple has snapped up a couple of mapping companies, Placebase and Poly9. Apple has also been hiring engineers with mapping and navigation experience to join the iOS team. On top of that, when Apple responded to the outpouring of media scrutiny about iPhone location tracking in April, the company revealed it was creating its own traffic database.