The new build of Windows 10 Insider preview builds 14366 is available for PC users who selected to receive updates in the fast ring. At the moment, there is no official ISO image of build 14361 available and users need to download and install it through Windows update service.
Windows Insider with the fast ring can download and install the new update via Windows update. In case, you’re looking for a clean install of Windows 10 Insider preview build 14361, then there is a bad news.
With the release of Windows 10 build 14361, the company has changed the encryption key for ESD using which one can easily create ISO images using ESD file. Unluckily, directly converted ISO images of build 14361 are not available the moment.
Update: Article in processing soon will add ISO images for build 14366
Alternatively, You can download official .esd file of Windows 10 Insider Build 14361 released by Dona Sarkar & W.Z.T. You can check this tweet shared by Twitter user WzorNet to grab the direct links to download (more than 20) .esd file of build 14361. After downloading, convert it into ISO image using the following tutorial How to Convert Install.esd file to ISO.
Previous update details build 14352
Find all the details on the previous update, Windows 10 Insider Preview Build 14366, in this other article