"Another Ultimate Edition difference is under the hood: the engine is Takumi (master craftsman) -tuned for smoother rotation feel, high-quality sound, and enhanced acceleration response. The rear differential has also been Takumi-tuned for acceleration response."

This sounds like marketing BS or they might have actually put the LC500H diff in it, hopefully!

 

I think an easy way to check this would be by checking part numbers. I don't think anyone would have those part numbers for MY24 yet but maybe in a few months we'll know.
Diff from the hybrid would be nice though!