The moment Dostana became a box office hit with sexy Priyanka Chopra, smoking hot John Abraham in his trunks and Abhishek Bachchan in a pink car, Karan Johar announced openly that he would make a sequel for it.
We even heard that Karan was quite excited about the sequel and had already made up his mind to cast Katrina Kaif in it.
However, as of today, the news is that Dostana 2 is pretty much not happening. The issue is that Karan Johar is having huge differences with Tarun Mansukhani regarding the script. Tarun has failed several times to produce a script according to Karan's high expectations.
According to sources, the first half of the film is ok but Tarun is unable to make a much better and interesting second half for the sequel. Obviously, Karan wants the sequel to have an ever better end than the original part.
This means that the news that Katrina to replace Priyanka are all not significant since no top actress would work in a movie with an incomplete script. Sad news for all Dostana fans but I am sure sooner or later, the script will get finalized and we will see the sequel on screens some day.