Well cheer up as it appears that a group of hackers are working on an exploit to jailbreak the 3rd gen AppleTV.
There is a group of very bright and talented individuals working on a lead that could result in a usable jailbreak for the 3rd gen Apple TV. While there is no telling how long this process could take, we remain optimistic that a jailbreak for this device will be available in the future. For the record, no one at FireCore is involved in the jailbreak discovery process. —says James Abeler of FireCore.
What does this mean for you? It means be patient, someone’s working on it which is pretty exciting. Unfortunately the AppleTV is a small platform and thererfor makes finding an exploit freaking hard. So it may be awhile. But at least there is some news that someone is taking a crack at it.