"I could definitely write an eighth, ninth, tenth," Rowling told Oprah Winfrey.
"I'm not going to say I won't. I don't think I will … I feel I am done, but you never know."
When speaking about finishing the last installment of the saga, Harry Potter and the Deathly Hallows, she said: "It was a bereavement."
When they leave it open like that, it means that there will definitely be more books and films.