Here are all of the Fortnite Skins and other cosmetics that have been leaked in previous updates, but have not been released in-game yet.
New cosmetics are being released in the Fortnite Item Shop on a daily basis and the majority of these had been leaked by data-miners from previous updates. These cosmetics include Skins, Back Blings, Pickaxes, Emotes/Dances and Wraps and there are many leaked cosmetics that have not been released in-game as yet.
Here is a list of all of the leaked cosmetics that have not been released yet as of 27th October, before the Item Shop has been updated. Many of the cosmetics that have been leaked in the more recent update will likely be in the Item Shop within the next week.