Yeah I'm not really worried about it...it was just a dick-move by Sony and Polyphony Studios. It would be nice if they didn't "bate and switch" everyone who bought the pre-release thinking they were going to get a jump on the competition.
About the feature being subject to change...I believe that is refers to updates to the game after its released and not about a major feature that prompted millions to buy the game.
I just think it's lame that they made so much money off everyone based on a feature that didn't get added and turned around to produce an underwhelming game lacking much more features than anticipated. I don't like companies who take advantage of their loyal customers.