[tracilicious]

Originally Posted by Snowflake

No idea. JK has stated, repeatedly, when you're dead, you're dead. She's always been very clear she is not going to whitewash this aspect, characters will die. So, I'm not too sure that either of them will show up. Same for Sirius. So, until I read otherwise, I'm going to assume JK is telling the truth, for the record.

Harry's parents came back in some form to help him in GoF. There's no reason to think that Dumbledore and Sirius can't do the same, especially given the loads of phoenix references surrounding Dumbledore's death and Sirius's strange crossing over. We don't even know that Sirius is dead.