JK Rowling just confirmed the existence of an upcoming play called "Harry Potter and the Cursed Child"!

Rowling tweeted this to her fans:

"I'm also very excited to confirm today that a new play called Harry Potter and the #CursedChild will be opening in London next year."

She added:

"To answer one inevitable (and reasonable!) question - why isn't #CursedChild a new novel? - I am confident that when audiences see the play they will agree that it was the only proper medium for the story. #CursedChild "

But she did assure her fans one thing:

"However, I can say that it is not a prequel! #CursedChild "