Microsoft has finally released ISO images for a Windows 10 Redstone 5. If you’re part of the Windows Insider program and planning to test Windows 10 Redstone 5 from scratch, this should come as a good news for you. These ISOs allow Insiders to perform a clean install of Windows 10 Redstone 5 or skip straight to this build they are running an older version.
Currently the following Windows 10 builds are available for download from Microsoft's ISO page:
The latest Windows 10 Insider Preview build 17713 ISO file is approximately 4.6GB and can be downloaded here.
Once you have downloaded the ISO, you will need to a DVD burner software to write the ISO to a DVD. If you do not have this type of software, you can use Microsoft's Windows USB/DVD Download Tool.
It is also important to note that when you install the Preview Build, it will need to be on a device that was previously activated with Windows 10 or with a Windows 10 product key.
According to Microsoft’s typical schedule, Windows 10 Redstone 5 (also known as Windows 10 October 2018 Update) should begin rolling out to the general public in October after getting finalized in September.
Microsoft recently confirmed that Redstone 5 has been moved from the RS_PRERELEASE branch to RS5_RELEASE and the company will soon start focusing on stabilization of the OS. In the meantime, Microsoft has also started working on "19H1", the next major release for Windows 10.