I'm telling you the updates which I have got that inaugural was from SC because train proposed by Secunderabad MP and not by a politician from Goa so most probably inaugural will be from Secunderabad the same way Vasco Jasidih express inspite of being SWR train inaugurated from JSME coz it was proposed by Dubey ji.
And 15th September inaugural is cancelled as per the update I have. I hope it's inaugurated before the end of this month. And SC VSG express is definitely a new train coz it will require seperate slot for two days a week present link trains did not require seperate ones as they run linked with Amaravati express and TPTY express.