Spent some time with it now, enough to give my current pros and cons at least.
Cons:
AI in career does start out a bit easy
AI cars in trackday rivals are annoying
Love world tour but I wish the guy would stop talking
Could do with some more new enviroments
Pros:
Graphically stunning
Top notch feel to each car, distinct uniqueness between each car
World tour mode is brilliant
Autovista is really very cool
Headtracking is good and works
Not so much of a slog to get credits
Photomode is drastically improved, could be down to the graphic improvments
Car clubs
Rivals mode is simply brilliant, no other word for it and no cons to this mode whatsoever
One of the best car selections I have seen in a racing game