http://www.pcgamer.com/epic-teases-upcoming-fortnite-battle-royale-changes-in-a-new-developer-video/

Epic Games has dropped a new Fortnite Battle Royale developer update video that offers a look at the coming map update, which will include changes to biomes to make them feel more distinct from one another, and information on what's going to happen to all that Christmas tree loot when the event ends. (Short answer: It's all going away.) 

"With the end of the holiday event we're going to be removing the Christmas trees and the treasure chests that spawn next to them," Epic's Eric Williamson says in the video.