J.K. Rowling is working on a Harry Potter prequel! Well, sort of. It’s actually a play, not a new novel, but it does take place before the events of the first book.
“The Cursed Child would ‘delve into what happened to Harry’s parents before they were killed by Lord Voldemort, forcing an infant Harry to be raised in miserable circumstances by his mother’s sister, Petunia, her horrid husband Vernon and their spoiled son Dudley.'”
Read more here