El Corte Ingles, a Spanish retailer, listed Fallout 4 in its “Game of the Year Edition” for Nintendo Switch. If I not mistaken, some years ago, El Corte Ingles agglomerates the 15% of the Spanish videogames market. Nowadays with the entrance of Amazon, the situation could be totally different. Abroad from Spain, El Corte Ingles is not a known franchise, but is important in the country.
The game could have listed by error, but the retailer updated the page removing the release date and keeping the listing overall. That movement could add a thin layer of confidence.