According to a filing with the U.S. Trademark Offices, Bethesda parent company Zenimax has a live filing for something called "Hearthfire," a term which crops up in Elder Scrolls lore as a fall month which is home to the day of Tales and Tallows and a celebration of Necromancy, as G4 helpfully points out.
That sounds analogous to Halloween. Could Bethesda be planning a Day of the Dead-themed DLC pack for Skyrim, thick with zombies and all other sorts of monsters? It would be an interesting direction to go after the vampire and werewolf-focused Dawnguard, but not entirely unexpected.
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