Ever since September 2016 YouTube has been testing a new UI for its Android app. This has gone through a few different iterations throughout the testing phase, and today it's finally ready to officially make it to every single user of YouTube for Android. The main new thing you'll see once the update goes live for you is a bottom navigation bar. This features clearly labeled tabs, so you no longer have to wonder what you're about to tap on. It's also visible on all pages (except when watching videos). Account and Library are now separate sections, making it simpler to find what you...
Source: http://www.gsmarena.com/youtube_for_android_officially_gets_bottom_navigation_bar-news-25325.php
