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 want. Your videos (playlists, watch history, uploads) reside within Library, while Account and Settings can be reached from your profile icon at the top.
Additionally, the app now remembers where you left off in each tab, and when you go back you can easily pick up from there.
I was about to comment on how bad YOUTUBE is bad on iOS because everything was at the bottom. Thank you Google for transferring the disease to Android.
Now it looks like on iOS...good job Google
I really like the new UI it is easier now to access to the playlists and subscribed channels, apart from that it looks almost the same.