This leak isn’t the normal one from the game files, it came directly from the source itself.
On the official Instagram story for Fortnite Game, the company accidentally posted a photo of a never before seen skin.
A blue elf with icy wings on her back, the skin looks pretty clean. Here’s a screenshot of the quickly deleted story:
This skin will almost certainly be the next day’s post, but there is definitely a social media manager at Epic in hot water right now.