He came back in Hyrule Warriors and that game could have been canon easily if they had said so. BoTW makes no sense so I don't think they'd need to detail the exact method of his return. And I'd think if he came back he would likely be Ganondorf's lackey.
He became the anti Master Sword and dissapeared with the defeat of Demise inside the demon realm. Its not stated he is dead so it is possible he will be able to come back. I personally hope he does.