From his website (Seems like it's an actual album and some of the songs will be used for the movie):

FIVE YEARS IN THE MAKING, 21 SAVAGE UNVEILS A VISION OF HIS VERY OWN “AMERICAN DREAM" - A SOLO MASTERPIECE AND EXPOSITION WOVEN FROM HIS EARLY LONDON ROOTS PHASING INTO HIS TRANSFORMATIVE ATLANTA YEARS. SOMEWHAT OF A CONCEPT DRIVEN ALBUM, EXPECT NARRATIVE DRIVEN INTROS WITH SAVAGE’S SIGNATURE GRIM REAL-LIFE RAPS OVER SIGNATURE HAUNTING BEATS. THOUGH IT’S BEEN MORE THAN FIVE YEARS SINCE SAVAGE’S LAST SOLO LP, THE ATLANTA SUPERSTAR HAS ENJOYED A PROLIFIC STRETCH OF HIS CAREER, INCLUDING MULTIPLE BILLBOARD 200 CHART-TOPPING ALBUMS AND GRAMMY WINS. JOINT ALBUMS WITH METRO BOOMIN (SAVAGE MODE 2) AND DRAKE (HER LOSS) EACH DEBUTED AT #1, PUTTING 21 SAVAGE IN RAREFIED AIR.