As a Supra owner, I personally would love to see another Supra again, as well as a MR2. Its also been rumored for awhile though that we'll be getting another RX-7, but it doesn't look like that will happen. Really though, I don't see a Supra coming back, not unless the FT-86 does amazingly well in sells. At earliest I see us possibly getting a new Supra when we get a second generation FT-86, so around 2017?
No offense CyberFormula, but I think your specs are a bit too close to the '86 and not close enough to what a high-end sports car would be. What I think a realistic A90 would look like if made:
3.0L V6, both non-turbo and turbocharged.
~360 hp (non-turbo), ~400 hp (turbo)
3,200 lbs - 3,500 lbs
~$40k-$45k (Base)
Hopefully with a targa top and liftback to carry on the Supra tradition. Unfortunately, I don't see Toyota making a new inline 6 for it, or even using a flat 6 from Subaru for it. I'd imagine they'd either use one of their current V6 or a new V6 to power it, hopefully aluminum block and head to reduce weight. Maybe even a V8 to get the necessary power, which would also put it on par with its competition. If its a 6 cylinder, its got to be a 3.0L though, just for the heritage bit.
Something like this but without the ridiculous spoiler they put on it. Hopefully if it does come out its design has shoutouts to all three Supra generations and doesn't draw on the MKIV too heavily, although a completely modern Supra similar to the FRS might not be too bad either.