Source: Google
Google is changing how paid search results show up on mobile. These will now carry a larger "Sponsored" tag instead of a simple "Ad" tag. The website name is listed at the top of each search result too. The "size and shape" of each site's favicons are also getting updated, so they're easier to see. Google plans to test a "similar experience" on the desktop "soon."
The change is implemented because Google wanted to ensure "ads are clearly labeled" with a tag that's "prominent and clear across different types of paid content." While the more prominent position of site names and favicons should make it easier to "identify the website that's associated with each result at a glance."