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Mark my words. The next Pokémon game will be announced this month. It will feature the south of Kalos that we didn't see yet as well as parts of Hoenn. The story will expand on Rayquaza's lore through Zygarde.
After the E4, a very small part of a new region will be accessible, where Hoopa will be found. This region will be the one featured in the next gen.
