The official ISO files for the latest Windows 10 PC Insider build, 14332, are now available for download. Available directly from Microsoft (via MSPU), the files allow Windows Insiders to perform a clean install using the latest available Windows 10 build.
Windows 10 build 14332 was released as a download for Fast ring Insiders just over a week ago, and includes a slew of bug fixes and introduces Cortana search for Office 365. Be aware that once downloaded, you'll have to transfer the ISO to a DVD or USB flash drive to perform a clean install. However, if you're interested, you can download the ISO file and find installation instructions from Microsoft at the link below.