J.K. Rowling is working on a second "Fantastic Beasts" film

Eddie Redmayne stars as Newt Scamander in "Fantastic Beasts and Where to Find Them."

Warner Bros.

While the theatrical release of the Harry Potter spin-off "Fantastic Beasts and Where to Find Them" is still three months away, J.K. Rowling is already hard at work on its sequel.

Rowling will write the screenplay for the next film in the series, which will have a release date of November 16, 2018, Warner Bros. announced Wednesday.

The celebrated British author made her screenwriting debut with the first film, starring Oscar-winner Eddie Redmayne as Newt Scamander.

While little is currently known about the plot of the November release, its sequel "moves deeper into an increasingly dark time for the wizarding world, where Newt and our other heroes have to decide on their allegiances," according to a studio statement.

"Fantastic Beasts and Where to Find Them" hits theaters November 18, 2016.