Along with the list of officially supported handsets, it looks like several non-Lumia phones were also able to download and install Windows 10 Mobile build 10536. That's due to a "detectoid" bug, according to Gabe Aul, who has stated that the build will not work on a non-supported device, and that installing it will require a reflash to get the phone back to a functioning state.
Full story from the WindowsCentral blog...