Google My Business quietly pushed out a new feature named "access map view." It is basically a way to see all the businesses you manage within Google My Business on a map. Nothing that crazy to be honest and it makes sense to be able to view your business listings on a map, doesn't it?
Here is what it looks like:
So you either see a red of blue building icon, that is a single listing in that location. When you click on those icons, it lets you see the listing information with an edit button to go into edit mode. The bubbles with numbers on them is the clustered locations that when you click on you see the locations in that area. Then when you have clicked the cluster, click any particular location's row to update its information.
To access it, go to Google My Business and click on the map view icon which looks like this: 
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