Ok, first off let me throw like 19,000 caveats on this that the info is old and am in no way saying "THIS IS WHAT IS GOING TO HAPPEN!" much like the bf4 res shit that people think proves me wrong... read what i'm saying here.
It's been months and at that point I had no goddamn idea what the "launch event" even was. But at that time I was told "They are thinking about showing the Demon's Souls spiritual successor" there.
Now many people here have been calling it Demon's Souls 2... it might be. I'm just passing on what was said. Also, at that point there were arguments about whether it was going to be shown at gamescom or TGS and then someone decided it would be shown at this.
Months have passed. They may have chosen a different game. I have no clue. I'm just sharing what I've been told, WHICH IS OLD Info, so don't kill the messenger if i'm wrong.
There's things I'm certain about. This isn't one of them.