The official ISO images for the latest version of Windows 10 (Build 14332) are available for download. This means that you can download the images directly from Microsoft.
ISOs will allow registrants to program Windows Insider perform a clean install if they wish, using the latest available build of Windows 10.
Windows 10 build 14332 was released to Insiders enrolled in the Fast Ring a week ago, and it includes several bug fixes. A new feature is the addition of the ability to search through the digital assistant Cortana in Office 365.
Of course we should mention that this build essentially blocks Cortana's digital assistant from third-party search engines other than Bing.
If you are interested, you can download it archive ISO and find installation instructions from Microsoft at the link below.