As Google used to show featured snippets for individual topics, now it will show a featured snippet focusing on differences or similarities between two things.
Searchers will be able to utilize drop-down tabs to further discover different subtopics in the featured snippet.
See this example-
“Now when you search for something like [quartz vs. granite], you’ll see a panel with a set of relevant subtopics to explore. As another example, when you search [emergency fund], you’ll get a quick view of information that relates to the recommended size, purpose, and importance of an emergency fund, and you can easily click the links to these relevant sources learn more.”
The snippets are generated automatically, so no specific markup would be needed for content to be added in them.
“These new panels are automatically generated based on our understanding of these topics from content on the web, and we hope you find them useful as they roll out over the next few days.”
Google identifies this update as a part of improvements the company is taking to help users access the information faster.
The first improvement was done in February when Google brought multifaceted featured snippets.