As we promised you earlier: The unofficial ISOs of Windows 10 build 10586 is here. This particular version is the old RTM counterpart of the upcoming Windows 10 Threshold 2 that will be released next weekteam.
So from the download links below you can be the first to download the RTM version (Release to manufacturing), but you should know that ISOs are homemade.
That is, they are made from the files downloaded by the Insiders from Fast Ring.
The 2 ISOs were created from the official Windows ESD files Update.
Windows 10 Threshold 2