From what I've seen, single player is mostly just challenges, time trials, driving school and licence tests, which is pretty disappointing.
Hopefully PD are hiding some good AI races in the full release because it'd be ridiculous to put all their eggs into just purely online racing.
Although, all of these special edition variants of GTS are getting a bit silly now. Part of the charm with GT is to start off with a second hand banger (1990 Nissan Primera of course!) and eventually building your car empire.
I don't see the appeal of having several high end cars and being thrown 2,000,000 Cr at the very beginning of the game. Little to no incentive to progress.
I've pre-ordered the Smyths £38.99 standard version for that reason.