The YouTube mobile app will soon change the way it presents your videos, dynamically fitting them to the screen you're on no matter what format they were shot in: mobile phone, DSLR, square, 4:3 or 16:9 videos will now fit better on your mobile devices. The update should start to roll out in the coming weeks.

The desktop version of YouTube has a cleaner design that puts video front and center and gives you a new Dark Theme for a more cinematic look. The team is still working on the new design, but you can check out the new look in your browser by going to youtube.com/new, then get back to the current design by selecting "restore classic YouTube" from your Account menu.