I don't believe it was ever mentioned in the anime, but in the manga Vegeta somehow realizes that Black's body is from a much further point in the future than that of the Goku he knows ovo.fyi/1337x ovo.fyi/kissasian ovo.fyi/mangastream
Do you believe that would have been a point past the Tournament of Power? I would think if this was the case then Zamasu would be aware of a form past SSJR or SSJB. Regardless, I appreciated this little line in the manga because it helped give a bit more reasoning to why Black was able to bring so much power out of Goku's body (despite the fact he is a deity, zenkais etc).
What are your thoughts?