Today's N.Y. Times has a review of the above titled 3 hour 8 minute Hindi language Bollywood bio of the Flying Sikh Milkha Singh. I don't expect my wife to go see it with me when it makes it to the local art house.
Don't expect it to be historically or T&F accurate on all accounts. Some years back I looked at some youtube posted interviews of Milkha Singh with people in India. Descriptions of the details of the 1960 Oly 400 m final, along with win-loss records of that season, setting of Oly Records in the prelims, were all wrong on many accounts. If you like Bollywood pics - and I would include Slumdog Millionaire in that genre (!) - it might be fun to watch.