<span class=normal>Shah Rukh Khan unveiled the song promo of Saans from Jab Tak Hai Jaan while Katrina joined in the proceedings via Skype.<br><br> </span><br><p class=clear>&nbsp;</p><amp-img width=1.33 height=1 layout=responsive src=https://images.bollywoodhungama.com/img/feature/12/oct/wbdtw3a.jpg></amp-img><BR><br><p class=clear>&nbsp;</p><span class=normal>The cast of Student Of The Year including Varun Dhawan, Alia Bhatt and Sidharth Malhotra attended a promotional event at Infinity Mall in Mumbai. </span>