Following this year’s Porsche expansion for Microsoft’s Xbox One racing game Forza Motorsport 6, it appears another is on the way, themed around NASCAR. Reddit user smakel101 posted a picture of a download card for the unannounced expansion. Take a look (via WindowsCentral):

The download card shows UK pricing. However, if the NASCAR expansion is indeed real, it is expected that it would also launch in the United States, where the auto-racing events are very popular.
Forza 6 already has NASCAR courses like Daytona International Speedway and the Indianapolis Motor Speedway. The rumored expansion is said to add Miami Homestead and presumably others, in addition to cars and other items.
GameSpot has contacted Microsoft in an attempt to get more details. We will update this post with anything we hear back.
In other news about the Forza brand, the beta for a version of Forza 6 titled “Apex Edition” launched Windows 10 PCs last week. It represents the first Forza game ever released on PC. Looking ahead, Microsoft has confirmed that all future Forza games will be made for console and PC.