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Okay I was wrong about the Tellius map. But I think I'm seeing a pattern here...
I'm not sure if Grand Conquest was already held in Archanea (Shadow Dragon/New Mystery and I believe it was in the month of May), but I know:
June/July/August - Valentia
September and October's Jugdral areas
November - FE6 Elibe
December - FE7 Elibe
So I think I'm seeing a sequence of maps per month and per game, maybe after July broke the pattern once. I'm foreseeing January's Conquest being held in Magvel (Sacred Stones), and then maybe February and March in areas of Tellius (PoR/RD), maybe Crimea and Daein. Then the following months may hold Ylisse, Hoshido, and Nohr.

Fate Grand Order
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