Chrome OS version 72 is now rolling out, having moved from beta to official release. It brings native Google Assistant integration, Picture-in-Picture video playback, changes to the Cast UI and security improvements, plus wider Android Pie adoption. Assistant will now be natively available on all Chromebooks. Instead of being sidelined in the bottom left corner (like on the Pixelbook), it takes center stage and is treated to a larger window (like on the Pixel Slate below). Otherwise, it does the same Assistant-y things as on any other device, responding to 'Hey, Google', answering...