Forza Horizon will get off-road racing tracks as well as cars built for the challenge on December 18th with the "Rally" expansion pack, developer Turn 10 Studios announced today.
The pack will cost 1600 Microsoft Points ($20) and adds a series of off-road tracks set in Colorado with new surface types, as well as cars built specifically for off-roading.
Turn 10 will begin releasing Monthly Car Packs beginning October 23rd. These packs will cost 400 Microsoft Points ($5) and include six additional cars for use in online multiplayer events. The developer is also offering a Forza Horizon Season Pass for 4000 Microsoft Points ($50), which grants access to the "Rally" pack and first six monthly packs through April 2013. Season Pass owners will also receive five Pass-exclusive bonus cars.
Players who purchase and play the game during its launch week will receive a free bonus car, the Saleen S5S Raptor, a car previously available only to the Forza Horizon team.
Forza Horizon and its Season Pass will be available on October 23rd for Xbox 360.