Zenos will return in 7.0

[Zanarkand-Ronso]

He died, leave him dead, delete any future references to him, and celebrate the most 1-dimensional character is gone.

Did he Actually "Die" though?
I mean, we didnt kill him or put him down, all we did was exhaust him and he laid down.

Now...he doesn't NEED to come back, but Id love it if he did!
He was a breath of Fresh air, not every freaking character needs to be this big complicated, deep, philosophical tragedy we have to feel sorry for or love.
Sometimes, a simple bad guy is needed. Sometimes less is More.

[Gemina]

Did he Actually "Die" though?

He did. Both fighters fought to the brink of death, but it was Zenos who succumbed to his injuries. There are a couple of things to take from this fight that let's us know he died. The first is he said vs the WoL he needs bring his all to bear, and that he will burn his candle to the end. The second tell tale sign is that the cutscene shows his breathing cease, indicating that his flame has burned out. Zenos achieved his end goal, and there wasn't anything left for him to live for. There was no reason for him to continue holding onto his existence.

That said, the WoL also almost died and we see him/her losing consciousness. Even if his/her mind said it was ok to enter eternal sleep at this point, the heart wasn't having any of that. Unlike Zenos, The WoL's heart is full of purpose outside of an ultimate duel with the ultimate foe: Life, love, friends, adventure.