A Spanish retailer has uploaded a listing for Fallout 4 GOTY Edition for the Switch:
This is definitely out of the blue, because so far, there’s been no sign of a Switch version of Fallout 4 in development; Bethesda and Nintendo have so far only been hyping up The Elder Scrolls V: Skyrim for the system. And even if there is a Switch version in the works, why wasn’t it shown off alongside the PS4, XB1 and PC versions? Also If you’ll notice, the release date says 26th September which is when the other versions release so it’s likely a mistake on the retailer’s part.
So yeah, don’t hold out for this one. Although there have been times when early listings have turned out to be true, like the Telltale Batman game on Switch.