DX12 can offer higher and steadier frame rates by delivering better CPU performance that allows for the rendering chores to be distributed across multiple cores. Epic says that in the future, it will add features to Fortnite that are only made possible with DX12.
The game developers wants to allow Fortnite gamers to opt into DX12 before the features are added to give it "valuable information" for its development efforts and to help find any bugs that might be out there. Epic is asking fans who have capable cards and are interested in DX12 to jump into the game and give the feature a spin.
A lot has gone on with Fortnite in the last few months. The biggest recent Fortnite news was in mid-October when Fortnite Chapter 2 went live with new gameplay, vehicles, and a revamped battle pass. More recently, Fortnite added a harpoon gun for dealing damage and catching fish. The weapon deals 75 damage to payers and has ten shots. It's similar to the Grappler but doesn't include mobility. Other recent big news included Fortnite Pro FaZe Jarvis, who received a lifetime ban from the game for using an aimbot in a video that he published to YouTube.