Fortnite: Chapter 4 introduced a new island to the long-running battle royale game, but the most important change might actually be under the hood. As part of the update, the game moved to Unreal Engine 5.1, which might not sound like a big deal, but it means that Fortnite is now taking advantage of some of the lofty visual features Epic has been talking about since UE5 debuted (so long as you’re playing on a PS5, Xbox Series X / S, or high-end PC, that is)...