I'm gonna start posting some of my predictions about the last Harry Potter book.
Posting under a cut since i'm not really trying to be spoiler free. Feel free to argue wit me about my predictions ;)
1) Ginny kills Voldemort. (prolly doesn't kill him, but has a big hand in it)
Update - don't really think that Ginny kills Voldy bleh.. thinking she will be there though.
2) We find out why Dumbledore trusted Snape, and that Snape is still loyal to Voldemort.
3) Possibly that Harry is a Horcrux?
EDIT: I don't really think that Harry was a Horcrux - more like, Voldy was using Harry as the person he had to sacrifice to make a Horcrux and the killing curse rebounding interrupted that. or something. heh, don't know.
4) Sirius comes back from the dead?
5) Random thoughts: I wonder if Regulus Black's middle name starts with A. They found a locket that nobody could open when they were cleaning Sirius' house, which could have new meaning if so. Would make it clear why the whole "Mundungus stealing stuff" was in the book too, cuz that may be one of the things he made off with.