If you're interested in playing the latest version of Fortnite, you'll need to make sure your game is up to date. Here's how to do it:
1. Open the Epic Games Launcher. If you don't have it installed, you can download it from here.
2. Click on the Library tab at the top of the window. All of your installed games will be listed here.
3. Find Fortnite in the list and click on the cog icon next to it. This will open up the Settings menu for Fortnite.
4. In the Settings menu, go to the Updates tab and make sure that Automatic Updates is turned on.
5. With Automatic Updates enabled, your game will update itself whenever a new patch is released by Epic Games. You can also manually check for updates by clicking on Check For Updates in the same tab.