So we can get 2nd French based region as gen 8 region

http://www.pokemontrash.com/3106-game-freak-dordogne-enquete.html

But it isnt only this recent big GF visit in southern France but also Masuda studying Southern France in late 2015

https://twitter.com/Junichi_Masuda/status/637532967410098177
His other pics
https://twitter.com/Junichi_Masuda/status/639176248112058368
https://twitter.com/Junichi_Masuda/status/638247970534649856
https://twitter.com/Junichi_Masuda/status/638306298711314432
https://twitter.com/Junichi_Masuda/status/638682782533840897
https://twitter.com/Junichi_Masuda/status/638760395088375809
https://twitter.com/Junichi_Masuda/status/638990205781848064

Doubt it would be Kalos but rather new region south of Kalos