Here's some more info about the new look of Chrome 69:
You can see it across all platforms—desktop, Android, and iOS—where you’ll notice more rounded shapes, new icons and a new color palette. These updates have a simpler look and will (hopefully) boost your productivity. Take tabs, for instance. Are you a secret tab-hoarder? No judgment. We changed the shape of our tabs so that the website icons are easier to see, which makes it easier to navigate across lots of tabs. On mobile, we've made a number of changes to help you browse faster, including moving the toolbar to the bottom on iOS, so it's easy to reach. And across Chrome, we simplified the prompts, menus, and even the URLs in your address bar.