Kettavan remains same:

The Producers' Council had asked the makers of Porukki and Kettavan to change the names of their respective movies. The makers of Polladhavan starring Dhanush was also asked to change its name. But this instruction was cancelled as it was the name of an old Rajinikanth film which was already released long ago.
Simbu has offered the explanation that Kettavan means one who has been spoilt because of a woman, and so did not censure anyone in particular. So the film will retain its original title.
Similarly producer – director Sakthi Chidambaram has also reportedly refused to change the title of his movie Porukki. According to him, Porukki means one who picks out the ills of society
Following this, Sundar C.'s film Porukki will undergo a title change.
In case the required changes are not made, the movies would not be eligible for the tax benefits offered to films with Tamil titles.

Dhanush in guest role

Besides his upcoming film ‘Yaaradi nee mohini’ and ‘Pollathavan’ Dhanush had accepted do guest role in Selvaragavan’s “Ayirathil Oruvan”. But the reason behind the acceptance is very crucial. By Selvaragavan’s Kadhal Kondean, Dhanush came to in Kollywood with full swing, soon danush became very popular in Kollywood. In the mean time Selvaragavan asked Dhanush to do a song in “7G Rainbow Colony”, but Dhanush refused to do that, this issue became major focal point between brothers.

Later on they resolved their issues amicably, recently again Selvaragavan asked Dhanush to do guest role in “Ayirathil Oruvan”, without any second thought Dhanush accepted the offer, this time Dhanush again don’t want to take any chance. This was the reason which pushed Dhanush to opt guest role in Ayirathil Oruvan.