Youtube's New design

If you want to try out YouTube’s latest look, you can opt-in to preview the new design at youtube.com/new. You can return to the current design by selecting “Restore classic YouTube” from the Account Menu. And don't forget to send us feedback from the Account Menu.

channel of youtube help https://www.youtube.com/channel/UCMDQxm7cUx3yXkfeHa5zJIQ