I'm doubtful on the whole trailer thing: not that it couldn't happen but have we ever had a case of a person leaking what happens in the trailer? Not that it's impossible though, always a first time etc.
It's them supposedly knowing fighters 4 and 5, and stating how many tracks they'll have
We could very well end up getting Terry and Ryu anyways, but I'm doubting this trailer business - seems a bit too calculated from a fan perspective, a la the Grinch hoax ('x has happened in the past before' - in this case, reusing a trailer's environment - 'so it'll happen again')
If the trailer does happen as promised though, then RIP speculation
Am just hoping that there's some kind of surprise in store like Hero getting multiple alts