Mumbai, August 1 (ANI): Bollywood superstar Salman Khan was spotted at the trailer launch of Kamal Sadanah's movie 'Roar - Tigers Of The Sunderbans' in India's showbiz capital Mumbai recently. Salman seemed very impressed with the trailer of the movie. 'Roar: Tigers Of The Sundarbans' gives a sneak peek into the world of the beautiful yet dangerous tigers of Sundarbans. The movie is slated to release on 19th September 2014.