JK Rowling was on Dateline Harry Potter: The final chapter - Harry Potter - MSNBC.com and revealed a great deal about how she imagines Harry Potter and The Deathly Hallows ending. She is straightforward about certain bits we've all been wondering about. For example:

Harry and Ron utterly revolutionized the Auror Department in-- at the Ministry of Magic. So they-- I mean, they are now the consummate-- they are experts. It doesn't matter how old they are or what else they've done.
So Harry and Ron lead the way in recreating the new Auror Department. And by the time-- 19 years later -- I would imagine that Harry is heading up that department, which is not corrupt in any way. It's-- it's a really good place to be. And Hermione … I think she's now pretty high up in the Department for Magical Law Enforcement.
Where I would imagine that her brainpower and-- and her knowledge of how the dark arts operate would really give her a, you know, a sound grounding.


and

To hear that Teddy Lupin -- Lupin's son is obviously okay. That he has an ongoing relationship with Harry and that he's-- he must be quite happy and he's got a very good-looking girlfriend because I think he's kissing in the epilogue his-- Bill and Fleur's eldest daughter.

Anyway, go read