https://www.polygon.com/2018/5/22/17380686/fortnite-patch-eye-of-the-storm-tracker-item

Fortnite’s newest patch was released on Tuesday morning and players quickly noticed there was an addition to the game that wasn’t in the patch notes: a new backpack called, Eye of the Storm Tracker.

As it turns out, the reason the item wasn’t in the patch notes is because it wasn’t supposed to be in the patch at all, according to a comment on the Fortnite subreddit by Sean “MrPopoTFS” Hamilton, the community coordinator for Epic Games.