Roku Devices Get YouTube App Now Available In The Channel Store
Plus, you can also send YouTube videos from your Android devices, iPhone and iPad to your TV, when you’re connected on the same Wi-Fi. Current generation players are those introduced after July 2011 and include the Roku LT, Roku 1, Roku 2, Roku 2 HD, Roku 2 XD, Roku 2XS, Roku 3, the Roku Streaming Stick (both HDMI and Roku Ready versions) and the Roku HD model #2500. If your Roku box is older than that, however, you'll be left out in the cold (and encouraged to upgrade, of course).
Honestly, this makes Roku a much more compelling option now. In the past, you could pick up a Roku, but if you wanted to stream YouTube at all, you'd also need an Apple TV, an HTPC, or some other box. Late really is better than never.