Without having the facts I would think it will be structured just like Ovi Maps for S60. The mapping program, all the map data and POI's, searches are all free. Announced turn-by-turn navigation is what will require purchase and they have drastically decreased their rates from what they were charging for Nokia Maps 2.0. EDIT: More info here... http://europe.nokia.com/explore-services/maps
Find your destination with free routing