Like so many other new racing games, Gran Turismo 5 simply thrives on downloadable content without devaluing the preexisting content. Upcoming DLCs for the game will offer a wide array of new cars, including F1 models and god knows what else. I'm no car expert.
http://www.gameranx.com/updates/id/3251/article/gran-turismo-5-dlc-cars-unveiled-in-new-screenshots/
UPDATED
Date and prices reveled...
"But, wait! It's not just the one pack, it's four seperate packs - all of which will be available from 18 October.
The most expensive of the bunch is 'The Racing Car Pack', priced at $7.99,which packs 15 cars - including three go-karts, the Mazda RX-7 and the ever-wonderful Nissan GT-R R35.
At $4.99 you can get the 'Course Pack', which adds a karting track alongside the SPA-Francorchamps. Rather less interesting is the $2.99 'Racing Gear Pack', which adds new helmets and racing suits, and the $1.99 Paint Pack (100 new colours for your cars).
All four packs can be bought in bundle form for $11.99."
http://www.incgamers.com/News/29284/first-batch-of-gran-turismo-5-dlc-dated
