Developer Turn 10 and publisher Microsoft have revealed a new downloadable content package for its simulation racer Forza Motorsport 4. The December DLC package is sponsored by the editorial site IGN and includes ten new vehicles. The content will be available on December 6.

Though the content is sponsored, it won't be offered for free. Gamers that have purchased the $30 Forza 4 "Season Pass" will get the DLC free, otherwise it is priced at 560 MS Points ($7).

December IGN Pack:
• 2011 Monster Sport Suzuki SX4

• 2011 Mazda RX-8 R3

• 2011 Ford F-150 SVT Raptor

• 1967 Chevrolet Chevelle SS-396

• 1977 Ford Escort RS1800

• 1981 Volkswagen Scirocco S

• 1986 Alfa Romeo Spider Quadrifoglio Verde

• 1988 Pontiac Fiero GT

• 2010 Maserati GranTurismo MC GT4

• 1957 Maserati 300 S