The delay comes after Warner Bros. determined the film needed more prep-time before cameras started rolling. Fantastic Beasts: The Crimes of Grindelwald only came out in theatres a couple of months ago and director David Yates and his team would need to be in prep now, which the project is just not ready for. The cast has been notified of the delay in order to accommodate their schedules.
Yates is currently still set to direct Fantastic Beasts 3 with Harry Potter veterans David Heyman, Steve Kloves, Lionel Wigram and Rowling producing. Rowling has once again written the screenplay.
Details on Fantastic Beasts 3 are being kept under wraps,