There's no word on Project Gotham Racing: Millennium Edition yet.
http://www.vg247.com/2013/05/20/forzavista-trademark-appears-ahead-of-xbox-720-reveal/
http://www.vg247.com/2013/05/20/forzavista-trademark-appears-ahead-of-xbox-720-reveal/
Siliconera unearthed the trademark filing this morning which pertains to, a feature of interactive video game software which allows players to obtain statistical information of internal and external features of a vehicle and to virtually navigate and operate those vehicles.
So it sounds like a new feature in an upcoming Forza title, similar to the Kinect showroom functionality in Forza Motorsport 4.