Starting today, some creators will begin seeing YouTube Studio (beta) as their default experience. If you’re part of this group, we’re looking forward to hearing from you and adding new features based on your ideas and suggestions! Details → http://goo.gl/MxUgH4 https://twitter.com/YTCreators/status/968911748840525824 …
You may not see all features you’re expecting while it's in beta–please send feedback and you can always go back to classic Creator Studio.