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Google's mobile search results now have a new format for the mobile sitelinks. Sitelinks are the links found below the snippets in the search results.
These new ones are expandable, similar to what we saw Google test in 2013 but these are on mobile.
The expandable and collapsible sitelinks look like this:
This was first spotted by @Shreedhan but I am able to replicate this on many many searches.
Forum discussion at Twitter.
