Maybe but they said Sutherland was heavily involved in writing the ending and he has never seemed fond of the character and actors love it when their characters get killed off so i would think he would be pushing for Jack to die.

Still as you said he could be brought back.

I really wouldn't mind 24 being a summer mini series event from this point on. That would give us new 24 while at the same time giving the people involved time to work on other projects. I guess we will see what happens.