https://www.cnet.com/news/fortnite-season-6-is-live-heres-everything-you-need-to-know/

Here is the new Fortnite map for season 6, complete with the floating island above Loot Lake, the new castle above Haunted Hills and the areas of corruption (greyish areas) spread across the island.

It's surrounded by a purple vortex that will draw you up to the island simply by walking into it, so you don't have to worry about building up to it. While we haven't exhaustively explored it yet, it's clear the floating island will make for some interesting endgame fun if the storm closes there during a match.