The ISO download for Windows 10 Fall Creators Update edition (version 1709) has been released and is now available from the Microsoft Volume Licensing Service Center (VLSC) portal. You’ll find both 32-bit and 64-bit ISO files with a download size of 3186 MB and 4347 MB respectively.
Known issues are documented here. Also, this is a good article on “How to verify if you have downloaded or installed the latest version of Windows 10”. I would recommend that you check out Michael Niehaus’ recent blog post where he shares some important information regarding the changes with the volume license media and upgrade packages with Windows 10. There is only one ISO with a single WIM (Windows Image) file that contains all the volume license images as listed below: