Google has a new look for its mobile search, and some may welcome the changes.
Google now includes the website name, and its favicon above the SERP, whereas, it was previously below, but, of course, didn't have the favicon.
Ads get a similar treatment, without the favicon, of course.
The idea behind this, from Google's point of view, is adding more "action buttons" and previews. Google says, "...all while giving you a better sense of the web page’s content with clear attribution back to the source."
Adding a favicon information [support.google.com
I've been testing it and, afaik, it's making the SERPs more colorful.
Clearly, a good favicon with help.