Before its third season had even aired, Black Sails had been renewed for a fourth season.
Black Sails (TV series) . On July 26 , 2013 , Starz renewed the show for a ten-episode second season , which premiered on January 24 , 2015 . The series was renewed for a third season on October 12 , 2014 , and a fourth season on July 31 , 2015 , both before the respective previous seasons had premiered .