Jack comes back. Everyone who has anything to do with this trilogy has confirmed the rumors. Billy Bob Thornton plays Hades!
THIS POST CONTAINS SPOILERS
I didnt know Hades would be in it? Is it turning into a greek mythology movie now? O_O But no, jack isnt dead, he's too cool to die. Duh. But it made me sad nontheless...and then in the final scene i just went O________O *dies of shock*