BMW/Toyota Supra Spotted?

We spotted a Lexus mule surrounded by what appeared to be a crowd of engineers today in Palos Verdes, CA! The team was very quick to cover up the vehicle after we took the picture. Most notably, the team arrived with the latest 911 and 650i M sports coupe. From the distance, the car looks like a Lexus RC-F update, but given the presence of the BMW and the direct competitor, the Porsche 911, it could very well be a BMW/Toyota Supra follow up! What do you think?