After ten years of speculating, the recent Game Freak hack finally confirmed that South Kalos did exist during Pokemon X/Y's development, but was ultimately scrapped before release.
For context, Kalos is based on France, and comparing the fictional and real-world maps, Pokemon X/Y appeared to be missing an expanse of southern land. This sparked debate that perhaps we'd visit South Kalos in a future exansion or game, spurred on by some interesting revelations about the Kalos War.
Nintendo has previously resorted to legal retribution in cases like this, and Pokemon feels like the biggest leak yet.
Speaking to Game Informer in 2014 (as broken down in this impressively detailed Reddit post), director Junichi Masuda said that "The war was a clash between two different countries." We know that it was fought between AZ and his brother, who had formed his own state, and it has long been speculated that he did so in the theorised South Kalos.
This lends especially well to the French inspirations as southern and northern France have a long history of feuding, assaults, and even crusades.
Speculation about a theoretical South Kalos stirred up again two years ago when Pokemon Scarlet and Violet launched, as...