Nineteen years after the Battle of Hogwarts, the school for witchcraft and wizardry is led by an entirely new headmaster (“McGonagall was really getting on a bit”) as well as a new Defense Against the Dark Arts teacher.
She also reveals that Harry and Ron sort of take control of the Auror department and Hermione ends “pretty high up” in the Department of Magical Law Enforcement. She hasn’t however told us who the new headmaster and DADA teacher are. (Via MuggleNet)