Google have updated their social networking app, Google+, adding a little functionality as well as a new notifications system. The last update gave us a new post composition screen that gave you the ability to add a photo, or a mood to a post.
This new update throws in a "link" option between the two, where tapping on it lets you manually add a URL. In regards to the UI side of things, notifications have been given a fresh coating of paint, coming out from underneath the navigation controls in the left slide-in panel, and out to a separate notification tab between the refresh and settings buttons that when tapped displays a full notification-specific panel from the right.
You can download the latest Google+ app directly from the Google Play Store on your Android-based device, or right here.