Just came across this article from tvguide.com: "At a Friday night appearance at Carnegie Hall, Harry Potter author J.K. Rowling confirmed that which many fans had suspected: Albus' wand leans the other way. According to the AP, during a question-and-answer following a brief Deathly Hallows reading, Rowling responded to a query about Hogwarts' headmaster finding true love by saying, "Dumbledore is gay." The writer proceeded to elaborate that Dumbledore was smitten with Gellert Grindelwald, whom he defeated long ago in a battle. Upon seeing his good friend go bad, she says, Dumbledore was "horribly, terribly let down."
Interesting. Though not entirely surprising.
In other semi-related news, my Statistics professor held class early last Thursday because his wife had won a free trip to New York to meet with J.K. Rowling and they had to leave early to catch their plane. I asked him to give my regards to J.K. and get more information on some of the other lesser-known characters in the book. Not sure how it turned out but if I find out anything interesting, I'll be sure to post about it here. 🙂
Just Added: Here's the link to another article (from ew.com) saying the same thing. This also has some more answered questions from the children.
Here's another related article from ew.com talking about the positive implications of Dumbledore's outing (p.s. There's one spoiler for those who haven't read Books 6 & 7 yet).