• New Audits panel, powered by Lighthouse
  Find out whether your site qualifies as Progressive Web App, measure the accessibility and performance of a page, and discover best practices.
• Third-party badges
  See what third-party entities are logging to Console, making network requests, and causing work during performance recordings.
• New “Continue to Here” gesture
  While paused on a line of code, hold Control and then click to continue to another line of code.
• Step into async
  Predictably step into a promise resolution or other asynchronous code with a single gesture.
• More informative object previews
  Get a better idea of the contents of object when logging them to the Console.
• Real-time Coverage tab updates
  See what code is being used in real-time.

截圖上的說明是這些
https://developers.google.com/web/updates/2017/05/devtools-release-notes
這頁面上還有其他沒有說明到的功能

• CSS and JS code coverage (這功能可以查看code裡面有用到跟沒有用到的部分)
  Find unused CSS and JS with the new Coverage drawer.
• Full-page screenshots (手機板的擷取還是怪怪的)
  Take a screenshot of the entire page, from the top of the viewport to the bottom.
• Block requests (可以針對requests做block，滿有趣的)
  Manually disable individual requests in the Network panel.
• Step over async await (這不太懂，再研究研究)
  Step through async functions predictably.
• Unified Command Menu (快速開檔?)
  Execute commands and open files from the newly-unified Command Menu (Control + Shift + P).