Will Gen 7 Take Place Near South America?

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Will Gen 7 Take Place Near South America?
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According to Serebii.net if you speak to any given backpacker in one of the hotels across Kalos once a day for 4 days in a row, he will give you the Strange Souviner above. An Easter Island head Pokémon, huh? Does this mean Gen 7 is already confirmed? I thought Nosepass and Probopass served that purpose already. Will the next region be based on or near South America?