Google has been super busy testing tons of variations of the user interface for the related searches section in the search results. I think this one is a new one from Amrit Dubey of a list view format, with each related search on its own line.
Amrit shared this on Twitter:
Here is what I see:
And I like I said, Google has been busy testing tons of variations of this, here are more that we covered and there are more that we did not cover:
Forum discussion at Twitter.