An image of a download card for a new Forza 6 expansion reveals that a NASCAR expansion is on the way.
Forza 6 leak reveals NASCAR expansion with World Tour Career Mode and 24 new cars
The DLC will be priced at £15.99 and the picture of the back of the card has even more details on the content.
If you squint very hard, you'll see that the expansion includes a NASCAR World Tour Career mode, 24 new cars, new multiplayer events, "new display elements for improved drafting and car spotting," and the new Homestead-Miami Speedway destination.
Microsoft haven't confirmed if the card is genuine, but we'll keep you posted.