Appears to be a quality movie, probably not commercial like Dhobi Ghat kind.  Karan Johar story focusses on 3 way relationship with Rani playing Journalist. Rani-Randeep pair would be something fresh, also Saqib Saleem in a hatke role after having done 2 rom-coms in a row. Zoya Akhtar story is about desire of kid to meet a star i.e Katrina. Anurag Kashyap  story is about a aam guy Vineet (played brother to Nawaazuddin in Gow) who wants to meet Amitabh Bachchan. Dibakar one I am not sure, maybe its about struggle of a theatre actor. Nawazuddin is part of it and he easily was the pick of the trailer.

How these 4 stories are linked or if not linked how would the screenplay be. Good thing is, all 4 directors are best chosen with the stories they would be very much comfortable with.

Right now, my order is Dibakar > Karan > Anurag > Zoya

I wonder if they have music for the movie, or just background scores.. as its tribute to 100 yrs of hindi cinema.