Google has announced several changes today Google+. The redesigned Google + is now available to all social network users and with some new features is intended to become a core of Google as a Work Service.
Google unveiled the new Google+ web design for the first time in November of 2015.
Since then, Google + has made two changes, but today, following the company's decision to publicize it, we believe we are seeing the final upgraded plan. 
As for the new features, starting today and after the upgrade you can now add links and photos to comments, page and community owners as well as moderators can approve (or disapprove) a post.
It is also new centre notifications, where you can view and manage your recent Google+ activity.
These features will not only apply to its web version services, but will also be released on the Android and iOS apps "in the coming weeks."
