I'm getting a lot of sudden reboots. It also happens on 0.0.7. I thought that using DirectX 12 seemed to help, but might have just been coincidence. I just had two within about 10 minutes. Normally I estimate it's averaging once every hour of playtime or so.
If I'm not actively working on stuff it doesn't seems to happen. But I can't find any single action that seems to cause it. There is no warning, just going along and suddenly monitors go black and PC reboots.