Here's a screenshot with the new yellow ad icon next to the display URL. The new label is replacing the "ad" that is next to the "i" icon in present design. The standard yellow ad background is gone.
Both organic listings and ads are present in the white box that is present in front of the new grey background. You will notice that the grey background behind Google search box and logo has also been removed.Is Google Testing a New Look for Mobile AdWords Ads?,