I thought the epilogue worked pretty well - rather like the ending on Lord of the Rings, the way it was low key and relaxed, and giving the author and the reasers a chance to say goodbye to the characters. And Dickens used to do the same in his own way.

"Bitch" and "bastard" shocking? I only wish that was the strongest language children encounter and use.

It'll be interesting to see what JK Rowling will eventually come up with when she gets round to writing again (aside from the tidying up encyclopedia/appendices) - you could see her learning the tricks of the writing trade in the course of writing the books.