Since this is the only method I am aware that actually exists, to create a Windows 11 ISO at this time, if you cannot wait for Microsoft to release an official Windows 11 Insider Preview ISO. However, there have been problems with weird glitches that have been reported, by installing Windows 11 using this ISO. Windows 11 Insider Preview 0.65 (co_release) amd64 will be the closest thing you have to be able to create an ISO yourself. The page you linked to only applies to Windows 10 at this time.
Microsoft has not published an ISO for the current Windows 11 Insider Preview at this time. However, I cannot find any ISOs for windows 11, only for Windows 10 (see screenshot). So again, following the instructions on TechRadar, I went to this link. However, there is a website called UUP DUMP, which publishes everything it does on it's GitHub project page here.
So download and install Windows 11 22454.1000 ISO from Dev channel and Windows 11 22000.184 ISO from the Beta channel directly from Microsoft Servers. Furthermore, Microsoft is seeding the latest Windows 11 ISO downloads directly on their servers. The simplest way to avoid substantial problems is to install Windows 10 on the VM then upgrade it to Windows 11. Download Latest Windows 11 ISO From Microsoft Servers. I want to download an ISO and install it in a virtual machine. I can now find the Windows 11 Insider Preview under Windows Update, but that's not what I want to do.
