looking at the data, it would seem that like this is not going to be a new game announcement.
Game Freak usually announce 10 months prior to release right?
But then during Sun & Moons PR, we saw "HD renders" of pokemon and a pokemon center (?), so they could have had a team working on it during S&M development.
So i'm staying hopeful, but not too hopeful.
It's a possible third version game though, not the release of a new generation or remake.