Update to YouTube brings improved video and YouTube Mix automatic playlist for music videos
After updating the app, those using Android 4.2 or higher, should notice an improvement in the quality of the videos played over YouTube. A trio of changes have been made to the comments section, allowing users to reply to comments, and also delete comments that they have put up themselves. And now, YouTube users can determine if a comment was shared privately or publicly.
The update is available now, waiting for Android users in the Google Play Store.