In a recent interview on Los Angeles radio station KUSC, John Williams revealed that he's most likely done with the Star Wars franchise after he composes the upcoming final installment, Star Wars: Episode IX.
"J.J. Abrams is preparing [Episode IX] that I will hopefully do next year for him," said Williams. "It will round up the series of nine that will be quite enough for me. Disney will take it further and they will probably continue on to do Star Wars for decades. So I think it’s all good."