Touché is a new Open Source Application Programming Interface built for Leopard (10.5.3). It brings the system multitouch abilities if you have the requested hardware, and let you work on a touch screen with your ten digits.
Ever dreamed of your Mac to be a super iPhone?

One can note most of it comes from API which are already part of Mac OS X. With Touché, Apple could easily unveil products to compete with Microsoft's super Surface table.
According to
msnbc who's quoting a Tomtom manager, the compagny already has a GPS navigation software running on the iPhone.
Before they release the app, they certainly want to study Apple's strategy in order to negociate the amount of incomes Apple gets from the Appstore downloads.
There's no doubt a turn-by-turn GPS solution would add a great value to the iPhone, and big developers such as Tomtom's might want to give a try on bringing the Appstore 30% profit margin down.