Harry Potter came into being more than two decades ago, in 1997, with The Philosopher’s Stone. The movie series started a little later in 2001, after JK Rowling had already published the fourth adventure of Harry Potter, The Goblet of Fire. The last in the series of Harry Potter books ended with The Deathly Hallows in 2007.
The popularity of young Harry Potter is such that Warner Brothers continue to create scripts of other adventures from the world of Harry Potter, namely Fantastic Beasts and Where to Find them and the latest, Fantastic Beasts: The Crimes of Grindewald. There are also reports every now and then of more such outcroppings with the next one predicted in 2020. Non-fiction books about the world of Harry Potter have come to light this year and some more are to follow.