Google is testing small but new feature to improve those clicking on the local map search results: a button. Spotted today in the search results, you can now click a “full screen” style button to expand the local results and help Google drive more clicks to local results where desired. To help users find even more local businesses, Google is testing this button.
Once you make your way to the map results page, nothing has changed — it appears just this new button is currently in testing.