<span class=normal> Shah Rukh Khan is gung-ho about his next big release- YRFs Jab Tak Hai Jaan directed by Yash Chopra. The actor has been busy tweeting pics from the film and we bring you a sneak peek of the same.<br><br><br><p class=clear>&nbsp;</p>Here SRK is seen strumming the guitar in the Challa track which launched today. The song has been sung by Rabbi Shergill. </span><br><br><br><p class=clear>&nbsp;</p>Watch Promo: Jab Tak Hai Jaan <br><br><br><p class=clear>&nbsp;</p>