Greg Sterling this morning mentioned [1] that Google is apparently experimenting with allowing full street addresses to appear below the URLs in PPC ads.
Even more interesting, this thread [2] at Webmasterworld now reports seeing a new layout of local listings within Google SERPs — their screengrab [3] shows the Google Maps onebox results on the right side of the page, apparently above the Sponsored Links ads.
Is this just usual UI/Usability testing, or could this segue into more unrest for the local SERPs?