Has Shah Rukh Khan's last bastion fallen? The grapevine suggests that SRK's closest buddy, Karan Johar, has signed the superstar's arch rival and filmdom's flavour of the moment Salman Khan for his next production co-starring Katrina Kaif.

Katrina and Salman, currently on a relationship-mending spree after their break-up in 2009, recently signed another film together-the Kabir Khan directed Ek Tha Tiger. Incidentally Kabir's film is produced by Yash Chopra, who have been like family to SRK ever since he worked in their production Darr way back in 1993. Interestingly, up until now, Salman had staunchly refused to work with the Chopras.

And with KJo becoming the latest SRK 'loyalist' to sign Salman after other Shah Rukh buddies, the Chopras and Farah Khan, many have been quick to take this as a sign of changing power equations in Bollywood and have started hailing Salman as the new King Khan.

But before you jump your guns, let us remind you that SRK too has a YRF film in the works. The yet-untitled film stars Katrina Kaif and Anushka Sharma as female leads and marks Yash Chopra's return as director for the first time in seven years, after 2004' s blockbuster cross-border love story Veer-Zaara.