You need to swing your pebble nuts a little softer cause the point still is that NO ONE except the internal design teams and last I checked little dorky nerdaholics like you are not on them, only qualified engineers. Just because you claim to have researched the entire internet, that doesn't mean that YOU are the source of knowledge for the Toyota brand. It shows you don't have a life or friends and spend too much time dreaming of owning a real car.
Another note to serve as MORE education for you, If a company plans on spending millions on desinging, testing and production or a "risk" vehicle, it would have to pass approval of the chairman and all of the boardmembers who represent their investors and therefore LONG before any announcement of a "production" vehicle is made, they investigate the market and see if it would be detrimental for the company to produce a 60-100k vehicle into a market that is between 25-50k on a wider moneymaking scale, that way they can avoid mass producing a vehicle which due to current market desire would lose money. Just because a bunch of enthusiasts desire a newer generation of the Supra, doesn't mean they will produce it. But on the other hand, if a company STILL chose to engineer and design a production supercar such as the Supra, they will avoid leaking out any possibily of such a beast too early that way they can avoid having investors back out from a potential LOSS in their investments.

So in little people talk, Just because YOU haven't found it on the web and you find these "paparazzi" style car spy sites that take pics of any car with a trash bag over it and immediatly put a label on it, and they say "oh no, a NMFDBMGDS aka the new SUPRA", doesn't mean that your findings are credible. PLUS, like nissan did with the 350z, the design and production specs were out a YEAR before ANYONE had a clue and meanwhile bounced around some ill looking prorotypes and idea cars when Nissan all along had the production model already lined up.Plus a Year before that, Nissan was claming that NO PLANS OF A NEW 300zx VEHICLE ARE IN THE WORKS RIGHT NOW when lord and behold... the 350z is born