Together with iOS 6.1.3 for iDevices, Apple Lossless Audio CODEC (ALAC), has launched iOS 5.2.1 for Apple TV- launched in the last 2 years on the market. The new version of iOS for Apple TV it brings a remade Hulu application, solves vulnerabilities not yet exploited by evasi0n on these products, brings the option to use the Select button on the remote control to access the subtitles and audio captioning menus, and finally there are some bug fixes and probably performance improvements.
iOS 5.2.1 for Apple TV can be downloaded directly from the products, but cannot be jailbroken.
