@YouTubeTV Would LOVE to subscribe to your paid service, but you still don’t have an app compatible with a 2015 Samsung SmartTV. (When) can I expect it?
At this time, YouTube TV is available on Samsung smart TV models from 2016 and newer. We're working on supporting older models but we don't have an update yet. We'll update our Help Center as we add support for more devices: https://goo.gl/Q1csb5 . Hope this helps!