They did drill down into campaign at the event. Its made up of:
Beginner's School: Tutorials and basic training. (Sounds like license events)
Circuit Experience: Learn and master the tracks, with commentary. (Sounds like time trials)
Mission Challenges: Quick mini-challenges (Reminds me of the coffee time challenges in GT6. They look very short.)
Racing Etiquette: Sportsmanship, and videos (Useful, but still not career content)
All of that sounds like content focused on training the player for competitive multiplayer, and not like the career modes of previous GTs that provided a progression through race events against AI.
Edit: Found a GTPlanet thread on it, with pictures,
here