When does Castlevania: Nocturne return?

Castlevania: Nocturne is an American adult animated dark fantasy action television series. Set in 1792, during the French Revolution, it follows Richter Belmont, a descendant of the Belmont family fighting against vampires and night creatures. The series received critical acclaim for its animation, directing, writing, themes, and voice cast, while its pacing and character development drew some criticism.
Set in 1792 during the French Revolution, the series follows the young Vampire hunter Richter Belmont and his adoptive sister Maria Renard as they make new allies and attempt to prevent the apocalyptic rise of a godlike Vampire Messiah.