Well that's a bit of a mistake! In a promo image for a Kirby's Extra Epic Yarn wallpaper over on My Nintendo, it appears someone goofed and accidentally included a Fortnite logo in the upper left-hand corner. As far as we know, this only appears in the promo image for the wallpaper, and not in the actual download. I'm sure the preview image will be fixed soon, but at least we'll have this post to remember it forever!
Kirby Battle Royale