I'll start with this, if you haven't read the latest book and don't want to know what happens, just hit the Back button right now. I've warned you in the title and here.. I'm not going to bother with spoiler tags....
Do you think he's really dead? Frankly, I don't believe any deaths until he actually says "so and so is dead". Or people who were there when the person died start talking about the deaths. But I don't think Jon is dead.. or if he is, the Red Woman will revive him. So I don't think he's permanently dead. I'm just curious what other people think.