Rollingstone.com just debuted this brand new movie poster from the upcoming Sony Pictures Classics’s documentary “It Might Get Loud”. Synopsis: Rarely can a film penetrate the glamorous surface of rock legends. It Might Get Loud tells the personal stories, in their own words, of three generations of electric guitar virtuosos – The Edge (U2), Jimmy Page (Led Zeppelin), and Jack White (The White Stripes). It reveals how each developed his unique sound and style of playing favorite instruments, guitars both found and invented. Concentrating on the artist’s musical rebellion, traveling with him to influential locations, provoking rare discussion as to how and why he writes and plays, this film lets…