There is a rumour that he's not dead, but the same rumour said that Claire was being rested from her contract for a while. I haven't a clue what's going to happen. I just know that in my fic, Jin won't be dead. (Saying that though, I don't like character deaths and rarely write them! Did write Michael as the man in the coffin once, and Goodwin's death once from Ana's POV, but that's it!)
And when someone else comes up with anything similar to either my upcoming Eko fic or Ethan fic, I will really start worrying!