We’re introducing search chips in Gmail, an easier way to sort and filter search results to find exactly what you’re looking for faster.

For example, you can search a colleague’s name and further narrow your results by selecting search chips like attachment type (Text document, Spreadsheet, PDF) or a specific timeframe. You can also filter out certain results, like calendar invites.

Source: G Suite Updates Blog: Refine search results in Gmail faster with search chips

This looks really cool, but it’s not showing up in my G Suite accounts yet.