Last week, Pangu team released iOS 9.1 jailbreak for 64-bit iOS devices, and also claimed to brings Apple TV 4 jailbreak this week. However, the team just expressed a regret on twitter that the Apple TV 4 jailbreak delayed due to they will need a few more days of testing.
Moreover, Pangu team also announced that they will release an .ipa file which users will first have to sign before putting it on their Apple TV. No other detail is known at this time.
If you are waiting for such a jailbreak released for Apple TV 4, then you should first clear a thing, that this upcoming jailbreak only works on the device running on tvOS 9.0 or 9.0.1, this means you can not jailbreak Apple TV 4 if it running on iOS 9.1 or later, as Apple stopped signing the older firmwares, and does not allow users to upgrade, downgrade or restore to these versions
This is obviously a little disappointed for the people who have been looking forward to jailbreak, but it is indeed an incentive lets hackers and users always have enthusiastic.