The new logo is not completely different from the old design. It will be black, white and red with letters closer together. There is also a small logo with a logo that YouTube says will be easy to adapt to the small screen.
'When the area is tight (on the phone) you can use that bright logo as an alternative, easier to read and readable logo,' said Product Manager YouTube Neal Mohan.
YouTube also made some changes on the website. Finally there will be a new Dark Theme inspired by Material Design that allows browsing and watching videos in night mode.