When does NOS4A2 return?

NOS4A2 (pronounced Nosferatu) is an American supernatural horror drama television series, based on the 2013 novel of the same name by Joe Hill. The series was canceled after two seasons after completing the storyline presented in the original novel. The complete season became available on June 2, 2019, via AMC's on-demand service, AMC Premiere.
NOS4A2 follows Victoria "Vic" McQueen, a young working-class artist who discovers she has a supernatural ability to track the seemingly immortal Charlie Manx. Manx feeds on the souls of children, then deposits what remains of them into Christmasland, a twisted Christmas Village of Manx's imagination. Vic must strive to defeat Manx and rescue his victims—without losing her mind or falling victim to him.