[German]Microsoft released the ISO image of Windows 10 Insider Preview Build 17127. This is an older build that appeared in Slow Ring a few days ago.
Microsoft is taking big steps towards the completion of Windows 10 version 1803 (Spring Creators Update), which I expect to be generally available by April Patchday (April 10, 2018). The current build is the 17133, which also appeared a few hours ago and is traded as RTM (see Windows 10: Insider Preview Build 17133 (RTM) released).
The ISO may be downloaded via the Windows Insider program site after a user login. However, the user must be a participant in the insider program. Three different versions of the Windows 10 Insider Preview-ISO with Build 17125 are available:
Windows 10 Insider Preview
Windows 10 Insider Preview Enterprise
Windows 10 Insider Preview Home China
neowin.net mentions here that updated feature packs are also available for build 17127. I guess the life time of this ISO will be rather short, due to the build 17133.