2015-04-21
Old TVs, iOS devices will no longer be able to play YouTube videos unless updated
Certain modifications in the YouTube app now means that it will no longer be possible to view YouTube videos on devices older than 2012. Which means TV models released in 2012 or earlier, including 2nd-gen Apple TVs, Panasonic TVs, Sony TVs & Blu-ray players, as well as devices running Google TV versions 1 or 2.
Reports: YouTube Blogspot, Engadget, Android Authority (blog)