I was really sad about Dumbledore until I read the part about how at his funeral, Harry saw a phoenix rising from the flames around Dumbledore's body, singing joyously as it sped to the sky. That seemed so Christian, so Narnian.
Also, since Draco was so hesitant about killing Dumbledore, I'm hoping he'll convert to the good guy side.
I also hope that a good deal of Book 7 will take place at Hogwarts, even though Harry claimed he wouldn't be back.