A few more tidbits of info from JKR's website..
Will you write more Harry Potter books after the seventh?
If you mean more novels, then I think it highly unlikely. I’ve got enough story for seven books and I never planned to carry the story beyond the end of book seven. I might do an eighth book for charity, a kind of encyclopaedia of the world so that I could use all the extra material that’s not in the books... we’ll see!
Dumbledore is really Ron/Harry ‘from the future’
Your inventiveness knows no bounds, and I do not mean that sarcastically; these theories open up exhilarating new vistas of possibility… but they’re wrong. Could it be that by speculating that Harry/Ron becomes Dumbledore, you are seeking reassurance that neither dies young?
I’ve also heard a whisper about Ron and Hermione’s son time-travelling, so I shall go further and tell you that NONE of the characters in the books has returned from the future. As for the idea of Ron and Hermione having a son… (chuckles as the distant roars of a million shippers reach my ears, all cursing me to an eternity of unsatisfied curiosity).
The FAQ on her website is amazing..I went through and spent several hours reading everything because I'm a big dork and it really tells you alot...
Maybe the half blood prince is Hagrid!!!! I love Hagrid!!

I'm thinking about pulling OOTP off the shelf and rereading the last few chapters just to be caught up to date for Saturday!! I so can't wait!!
And this is what JKR has to say about the mirror Sirius gave Harry:
Warning :: Spoiler Ahead! Highlight to read message!
The mirror might not have helped as much as you think, but on the other hand, will help more than you think. You’ll have to read the final books to understand that!
Anyone else watching "The Sorcerors Stone" on ABC Family tonight..It's the extended version..I'm watching "at it"..Seen it before of course!