Could this be Forza Motorsport 8?
According to many sources, the next-generation Xbox console should launch in 2020. In preparation for this, it a lot of developers like Rockstar Games are already looking for game developers to work on these experiences, but it seems like Microsoft's first-party studios are also preparing for this. Recently, a listing was spotted on Turn 10 Studios — the makers of the Forza Motorsport franchise — asking for a game developer to "deliver the next generation of Forza Motorsport titles."
Full story from the WindowsCentral blog...