Heya Wiz, I'm in the same boat as you - Audi TT current owner.
Anyway, my only guess is that they are probably trying to decide if they want to do any engine changes for the various models - I wouldnt mind seeing the Track version with a few extra tunes to give it another 10 or 15 hp.
But, frankly, as long as it's starting at 280hp on the base model, I am not complaining. It's a 100 more than I'm used to.