This is probably one of the most scariest thoughts of the upcoming Harry Potter Book. Who will be alive?
To me, i think that Ron and Hermione will die, and Harry will live, and conquer Voldemort, but will need to spend the rest of his life alone, becaus ethe pain is too deep.
This is a lot like the Lord of the Rings books, becasue Frodo cannot go back to normal whenever he returns, becaus ethe pain is too deep.