In addition to a Google Material Theme, the last update to Chrome OS introduced Night Light, dictation, Linux app support, and much more. Chrome OS 70 today thoroughly revamps the interface for touch Chromebooks and tablets. It also adds AV1 support and more HTTP warnings in addition to security and bug fixes.
The first big change in Chrome OS 70 on touchscreen Chromebooks and convertibles, like the Pixelbook, is to the app shelf of pinned and active software. Styled like a Google Material Theme sheet with rounded corners, it is taller and allows for larger app icons that are now centered with a new horizontal open indicator underneath.