Apple has begun promoting a new tvOS 9.2 feature on the new fourth-generation Apple TV called “Live Tune-In,” which allows users to initiate live playback in compatible apps by using a Siri voice command. While the option did not appear with the release of tvOS 9.2 last month, users in the U.S. who select Settings, System, What’s New can now see the feature has been added to the list of tvOS 9.2 features, highlighting the ability…