The next generation Apple TV runs on iOS 4.1 has already unboxed but the question has arised that will it be possible to jailbreak AppleTV or not?The answer is yes, the SHAtter exploit found by Pod2g & Chronic Dev team was successfully used to get the decryption keys.
However as soon as jailbreak tool is out for all iDevices, Apple will attempt to fix it by releasing new firmware update, hence it is necessary for you to save SHSH blobs for your iDevice including AppleTV .
TinyUmbrella tool developer Notcom has released an updated version of TinyUmbrella with support for AppleTV. If you have bought AppleTV and planning to jailbreak it in future then you must use TinyUmbrella 4.1.5 to save SHSH blobs of AppleTV iOS 4.1.
Download TinyUmbrella 4.1.5.