According to David Yates, Ezra Miller, who is playing a character named Credence, will have a significant role in Fantastic Beasts and Where to Find Them 2.
Fantastic Beasts and Where to Find Them opens in theaters on November 18 with Fantastic Beasts and Where to Find Them 2 set for release on November 16, 2018.
David Yates also recently confirmed that a young version of Dumbledore will appear in Fantastic Beasts and Where to Find Them 2, but an actor has yet to be cast.
Recently, Johnny Depp was cast in Fantastic Beasts and Where to Find Them 2 in an unspecified role.