Zenos said he wanted to die and even assuming he didn't quite literally "burn the candle of his life", it's stated that reaper avatars have a precedent for preying on their pact-bearers the moment their souls begin to wane, so I'm inclined to think he is actually dead and that the void shenanigans in the 6.1 trailer are linked to his avatar somehow.

That said, I am genuinely interested in the direction the new story is headed in, with ancient mysteries and the void seeming to be a focus.