There is no addition of a heat shield despite the much larger missile.
The heat shield.
Depends on the version. If it's Vertically launched then its cold launch but if it is slant launched then hot launch.Is Brahmos cold launched?
Funny thing is INS Delhi has pennat number D61 whereas INS Mysore has D60. Mysore had better AC facility. Also, they were suppose to carry Moskit but due to Chinese intervention they only carried Kh-35.Legend has it that INS Mysore has bigger heat shields as it was designed for Moskit missiles.
The sad part for me is that it could have carried 8 more Brahmos in the same configuration but they chose not to. Also, there is no significant Air defence modernisation. It still carries the same arm launcher Shtil and Barak-1 missile combo.