https://www.theverge.com/2017/10/17/16488914/microsoft-windows-10-fall-creators-update-download-iso-files

Microsoft's Windows 10 Fall Creators Update is here and ready to download. The software giant first started testing its Fall Creators Update back in April, and now all Windows 10 users will be able to experience the improvements today. Just like previous updates, Microsoft is rolling it out in stages, and you can check whether it’s available for your own PC from Windows Update. If your device is eligible then it will start downloading in the background, and a prompt will appear to schedule a time to install.

If your device isn’t on the list, then that doesn’t mean you can’t skip the line. You can manually update to the Fall Creators Update over at Microsoft’s Windows 10 site. Simply click the “update now” button and proceed with the upgrade assistant. You can also download ISO images of the final copy of Windows 10 Fall Creators Update should you want to clean install it on your PC.