I only say that Russell won't be reprising his role as Stuntman Mike in the seventh installment of The Fast and the Furious because Stuntman Mike died at the end of Deathproof. And the producers of Fast take their mythologies and origin stories very seriously.

We have no idea what role he will play, but it's unlikely he will slide into Vin Diesel's character, Dominic Torretto, only because this picture has both of them in it. Unless Kurt Russell is playing a future version of Diesel, which makes perfect sense if you think about it, because Russell is much older, and they look pretty much identical. There's a ton going on here, so please put your postulates and theories in the comments.

Thanks, and enjoy the next fourteen Fast and the Furious films.