This shows that how he is very important to everyone out there and we are happy that a Telugu director could achieve such stature by making Telugu films.
Hence, he is expected to be worried about something being wrongly speculated about his project. Wrong or negative buzz can diminish the project value at National level.
He wouldn't have given rumours such importance, if he did not feel that they can damage his project and his reputation.
Apparently, he felt the need to stop speculations about the story, about characters of Jr. NTR and Ram Charan and also about lady leads of his next film RRR, the multi-starrer.
Majorly, rumour about Alia Bhatt not signing the film even though SSR is trying repeatedly for her, as hurt him and hence, he is addressing press on 14th Of March, it seems.