The new cars that will be available for download are:

• Aston Martin AMV8 Vantage (2006)
• Audi RS 4 (2006)
• Chevrolet Corvette Z06 (2006)
• Dodge Viper SRT-10 Coupe (2006)
• Ferrari 612 (2006)
• Lanborghini Gallardo SE (2005)
• Mitsubishi FQ 400 (2006)
• Nissan Nismo Skyline GT-R Z-Tune (2005)
• Pontiac GTO (2006)
• Radical SR8 (2006)
• Ruf RT12 (2006)
• Saleen S7 Twin Turbo (2006)

There will also be additional features that will be included in a game update. They are:

• Quit to lobby functionality for host (in playtime)
• Lock to host car in playtime lobby
• Lock to host car class in playtime lobby
• Previously played routes list with save functionality for custom routes over live
• Show position of players option
• Hide HUD Option
• Manual gears in Race Against the Clock
• Show who' s speaking in online races
• Steering wheel support

Exactly the kind of thing Xbox Live/Marketplace is good for!

Also coming soon are two more downloads for Oblivion.

The Horse Armor Pack was quite cool, but these should be much better. They are:

The Orrery

Harness the power of the stars. Rebuild the defiled Orrery and unlock the secrets of this Mages Guild Inner Sanctum.

...and...

The Wizards Tower

In the frozen mountains of Cyrodiil stands Frostcrag Spire, a tower of wonders for your magic-oriented character to call home.

http://www.x360central.com/index.php?section=news&news_id=516

...

This is another reason why i' m glad I have a 360 and I think the live market place is gonna get even better.

• Saleen S7 Twin Turbo (2006)

....not having a 360 is beginning to really pi$$ me off....

So which ones cost money and which ones are free?