anyone know about sega booster disc?

[crazyotto]

I read way before the game came out about 2 booster discs for Sega GT. One was for xbox Live and the other was ??? Has anyone seen any updates on this or did i just dream it up?

[carlbme]

The only one i've heard about was possibly more cars and more tracks.

Of course last time i've heard anything about it was months ago, so I seriously doubt any credibility to it.

[ibloshtup]

theres an appendix disc and an online disc currently on the way. i have no idea when or if they will go through. theres forums for them at gamefaqs.com but not many posts