Ok this is random, but is it true that in the US the first book is called the sorcerer's stone instead of the philosopher's stone?? :? I just wondered...
Who knows, maybe Dumbledore will come back to 'fulfill his destiny'!! Like for example in The Lord of the Rings, with Gandalf or Aslan in the Lion the Witch and the Wardrobe! Just a thought, as I am another fan still in denial! JKR has left so much of the magical world of Harry Potter to our own discresion that we do not know if there is any 'deep magic' (to quote The Lion the Witch and the Wardrobe) that prevented Dumbledore from dying. Although in the first book when Harry becomes obsessed with that mirror, Dumbledore does remind Harry that people can't come back from the dead.
Hmmm 'tis a puzzling matter! 8O