Board Thread:Theories and Speculation/@comment-30241447-20190512072419/@comment-32685487-20190513182015

Madara did get revived, his Edo Body was transformed into his own body via Rinne Tensei. He even points it out in the manga panels. Another interesting thing, Sasuke says that Kakashi could use his Rinnegan if Sasuke was to die when he and Naruto's last fight is finished. I guess since Kakashi got used to and mastered the Mangekyo Sharingan he could one Rinnegan.