"I’ve just finished the fourth Galbraith novel, Lethal White, and I’m now writing the screenplay for Fantastic Beasts 3," she revealed during a Q & A interview on her official website.
"After that I’ll be writing another book for children. I’ve been playing with the (non-Harry Potter/wizarding world) story for about six years, so it’s about time I get it down on paper.”

Chapter 9, Goblet of Fire nearly finished me. I rewrote it more times than I can now remember. You'll get there. https://t.co/5Y5I4hRSDi

— J.K. Rowling (@jk_rowling) May 24, 2018