Although the timeline of the Zelda saga is very extensive, Link has always existed in a world with notable medieval touches. But… who knows? Since his story repeats itself cyclically through time, maybe one day we’ll find a game that takes a twist on that setting.
I don’t think it’ll happen, and it’s likely that I wouldn’t be too thrilled about it. But a fan has taken a somewhat strange yet highly applied idea to imagine how the saga could unfold in a future where the world is trying to recover from a great catastrophe, blending a bit of the style from another of my favorite sagas, Fallout, into the context. The style might be more or less appealing (I found it amusing, but I can’t fully picture a Zelda like this), but it’s clear that the effort is very commendable.