Google is testing placing those search refinement bubbles directly in the Google suggest autocomplete. Shalom Goodman spotted this and posted a screenshot on Twitter showing this in action.
I cannot replicate this but I assume swiping across the carousel will let you scan through more refinement options and then you can click on a specific keyword, if you want.
We've recently have seen Google testing more features in Google Suggest.
Forum discussion at Twitter.
Update: Still testing this in 2024 - via @AnthonyHigman:
