Today a jailbreak for ATV 4 running iOS 10.0-10.1 has been released. The tool was released by Jonathan Levin and is an adaptation of Luca Todesco’s Yalu
Jailbreak tool. 


The new tool is  Dubbed LiberTV, and does not include Cydia or Cydia Substrate for   tweaks and themes, as this would require Saurik’s input. 


NitoTV for LiberTV is in the works, but should not currently be installed as it has been causing serious problems. A fix is on the way.