https://www.gamespot.com/articles/watch-the-fortnite-season-6-darkness-rises-trailer/1100-6462117/

Fortnite Season 6 launched today, with all of the fanfare and loot that the season changeover brings. The theme of the new season is "Darkness Rises," and it celebrated the event with a new trailer. In it, we see the mysterious cube from Season 5 rising out of the water and taking a healthy chunk of beachfront property with it. That has created some new map locations that will impact your strategies on the battlefield.

To match the theme, this season adds Shadow Stones. These special items let you take on a supernatural shadow form with some additional abilities like increased speed and agility, as well as a special Phase ability that lets you pass right through solid matter. In a more cosmetic move, the update also adds Pets to trail you around the battlefield and react to your actions. Plus as usual it added lots of new cosmetic items like skins and emotes.