New Interface for Gmail and Google Drive File Previews

When you use Google Drive and click on a file that can't be edited, you get a preview interface that lets you quickly check your files, navigate between your files and more. The same file preview UI is also used for Gmail attachments.

Google updated the file previewer to give more focus to the content. The toolbar is now at the top of the page, it has an improved "zoom" feature and it disappears when you're not using it. Documents and images are displayed in a wider frame and take the center stage.

{ via Google Apps blog }