Unlike to other browsers and services Google Chrome and its Extension updates are silent which means you don’t get any notification whenever the extensions installed in your browser is updated with new features. This tutorial is on a simple Google Chrome extension called Chrome Update Notifier Plus, it simply enables browser notifications and informs you when new Chrome and its Extensions updates are available.
You should also know that you can update Google Chrome Extensions any time using the options button present in the top right corner of Chrome; navigate to Settings -> Extensions -> Developer Mode and Click Update Extensions Now button.