Okay, I'm now absolutely sure of it. It's gonna be a 6th gen game, and still in Kalos. However, this will be years later, just like Black and White 2. The adventure will began the day when Zygarde will awake and transform itself in ultra megazord zygarde alpha omega
Look at the left side (blue, like the moon logo) and the right side (red, the sun). We're still missing the south part of Kalos, which is based on France, and too many things left unresolved in Kalos (power plant ? big SUNdial with no explanation in the middle of Kalos ?). I mean, look at this :
Look at that giant sundial here, look at zygarde behind it, look at how it shows both red and blue gems of his body. It HAS to be a hint to Moon & Sun. I'm calling it now : Moon & Sun will be in Kalos, years later, after the awakening of Zygarde with his true form.
