• DevTools now displays server sent events in the Network panel, making it possible for a server to send new data to a web page at any time
• Support for the Media Session API, which allows developers to offer custom behaviors for standard media playback interactions
• New CSS pseudo-selector behaviors, such as the standard ::file-selector-button pseudo-element, which allows you to select and style the file selection button inside <input type=”file”> elements.

For a detailed list of changes, click here.