Google is testing more changes around the local pack in the search results. On desktop, Google is testing using round buttons as opposed to square buttons. On mobile, Google is testing bubble designs for the tabs, instead of simple text with underlines.
Here is the test for the desktop results showing the circle action buttons in the local panel. This looks like the mobile design but on desktop. This was spotted by @FrancastroKW and posted on Twitter:
Here is what the normal square buttons looks like to compare:
And Mordy Oberstein posted a mobile test for the tabs in these bubble like icons on Twitter:
Google always be testing.