NEW YORK -- Bruce Springsteen isn't just releasing a new rock album later this month — he'll also offer a documentary on the making of the music.“Bruce Springsteen’s Letter to You” will offer performances from The E Street Band, in-studio footage and never-before-seen archival material, featuring “a behind-the-scenes look at the iconic artist’s creative process,” according to a statement.It is written by Springsteen and directed by his frequent collaborator Thom Zimny.