Did we watch the same video?

Nothing in the video is confirmed as fact but it all aligns with what I’ve read from other sources with just a bit more detail. Essentially BMW built the B58, Toyota was dissatisfied with it and revised it. I’m certain that it’s still largely BMW but they wouldn’t allow various components to go into production. It’s been common knowledge for a while that Toyota did their own suspension and engine tuning, so don’t expect the ECU reflashes that BMW owners get to enjoy but Toyota have been saying all along that this car is more Toyota than the “experts” on Facebook say it is. This car is more Toyota than the 86 is.

Still more BMW in it than we’d all like (timing at the back of the engine, really?) but we all know that the most conservative car company in the world isn’t going to risk their reputation of reliability over a low production sports car so it’ll be interesting to see what all they’ve changed. Crossing our fingers for replacing the plastic in the cooling system.
Let’s face it, we all want new Toyota sports cars. Toyota has no interest in building sports cars at all so without other manufacturers, we get nothing and if this car is the same sales flop that the mkIV was, we’ll likely never get another sports car for a long time, never mind one actually engineered by Toyota so we all need this car to be a success. I’m not saying I’ll be first in line to buy one but I’m not totally upset by the car either. Everyone is quick to forget that the Supra was always competition for the Nissan Z cars, never the GTR. Toyota was never ever ever going to give us anything even remotely comparable to a GTR or C7 Corvette, especially not something wearing a Toyota badge. This car was always going to slated under the RC-F so it’s surprising that it does the 0-60 sprint quicker than the RC-F. Some people like to point out that the RC-F Or LC500 should have been the new Supra but the thing is, the RC-F is a nice GT car, and the LC500 is just a pretty coupe and kind of awful as a sports car. Either one would require a ton of work to be up to the job that the new Supra does so I can see where Toyota chose to engineer the car alongside BMW rather than try to reengineer one of the Lexus platforms. There’s no doubt that it will be fun to drive, we just have to wait and see how reliable the car is.
Let’s be honest, if this car was badged as anything other than a Supra, everyone would be losing their minds over it. If the mkIV was re-released today exactly as it was in 1993 like everyone wants, it would be the laughingstock of the sports car world.
Didn’t mean to make this post so lengthy.

TL;DR, Toyota was not impressed with the B58 and reengineered parts of it, and we all need this car to not suck.