The Today Show interview with JK Rowling answers some of the questions left unanswered by DH, and Jo explains why she had to leave so many loose ends:
"It would have been humanly impossible to answer every single question that fans have because I'm dealing with a level of obsession in some of my fans that will not rest until they know the middle names of harry's great-great grandparents."Yeah, we're geeks, aren't we?
Anyway, the number one question seems to be about Harry, Ron and Hermione (and a few other characters) do for a living. Jo said she had originally planned to include more of that in the epilogue, but it "didn't work very well as a piece of writing." But she's happy to disclose that Harry and Ron have "utterly revolutionized the Auror Department" and Hermione is "pretty high up in the Department of Magical Law Enforcement." Did Luna and Neville ever get together, as some of us were hoping? Jo doesn't rule it out, but she left the question open at the end of the book because answering it "felt too neat."
The first half of the segment can be viewed at the site now, i imagine the second half will be up after it airs tomorrow.