Thread:ADour/@comment-29259794-20131115012636/@comment-3317214-20131207163240

Whether he wants to return as Odin or not is irrelevant. It doesn't confirm that he will or will not return. And it certainly doesn't confirm that he is or isn't dead.

Keep in mind, Natalie Portman expressed disinterest in returning as Jane for Thor: The Dark World when then-director Patty Jenkins left. However, she still returned.

Weaving didn't publicly state that he didn't want to return until after the film, and even then, added that if they wanted him back, he's contractually obliged to return. Also, Red Skull isn't confirmed to be dead either. He disappeared.