Google on Tuesday announced three new updates to Google+ in an effort to revive interest in the faltering product. The added features will be rolled out next week, when the old Google+ layout will vanish. First, lower quality comments will be hidden, although Google didn’t explain how comments will be judged or who will make those calls. Google has tweaked the Google+ user interface to display more posts and less white space. Further, a zoom functionality has been added to photos on Google+.