If you own a smart TV or an iOS device that's getting a bit long in the tooth, you may need to do some upgrading this week if you want to continue using the YouTube app. Due to certain changes in the app's API, it'll no longer work on a number of models released in 2012 or earlier, including second-generation Apple TVs, Panasonic TVs, Sony TVs and Blu-ray players, as well as devices running Google TV versions 1 or 2. You'll know you're affected if a video showing the notice above plays upon firing up the app, though most models released in 2013 or later are safe.
Now, if you want continued access to the YouTube app, you'll have to update iPhones, iPads and iPods to iOS 7, at least. Third-gen Apple TVs need a platform upgrade, as well, while Google TV version 3 or 4 devices need the latest app update available on Google Play. Just because your product is too old for upgrades doesn't mean you'll have to bid your YouTube binges farewell, though. The website still loads on Safari (even on older iOS devices) or on any smart TV browser than supports flash/HTML5.