Quote Originally Posted by Miriel
Jack's dad is dead. That whole thing was resolved in Season 1 when Jack was able to find the coffin and finally bury his father.

I really doubt that they'd open that up again when it was so neatly resolved. And if they do, it would be sooo lame.
To me, the question of Jack's dad's death was resolved, but the coffin WAS empty, wasn't it? I just kind of assumed that the fact that his dad still wasn't not where Jack could find him perhaps symbolized the fact that he still had more to learn of his father, perhaps the whole thing with Claire.