Bing has made two small design changes to sponsored ads in search results. The sitelink buttons below the ad text keep the same shape and rounded corners, but they now have a darker gray border instead of the very light gray one, so they stand out more.
The second change is the CTA button next to the ad (for example “Get Quote” or “Free Quote”). It used to be blue. Now it is white with a thin outline, so it blends in much more with the rest of the result.