Final days of a tulip

Last September I traded in my muched loved film camera for a D90. I still have all the lenses and some of which are rendered useless like the Nikon 16mm fisheye because of the sensor size. While this is one of my most favorite lens that has been collecting dust waiting for me to save up and buy a full frame sensor camera. When will Nikon produce a full frame sensor camera that doesn't have the price tag of a new car?