Okay so I have inside information on the next pokemon games, choose too beleive me or not but screenshot this.

Pokemon stars is not the next title at all, its the codename.
The next games are in fact DP remakes with some of platinums features.

Pss returns.
Upgraded version of pokeradar similar to dexnav.
Necrozma makes a appearance something to do with team galactic wanting it.
Features of pelago implemented easy way to farm berrys.
Megas returned not heard anything about Z moves but will be present in game.
Mega froslass, and mega flygon.
Battle frontier fully fleshed out.

Will post more later when I find out some more juicy stuff