wants to add more search options: allowing the user to filter through the results themselves more effectively

Especially they want webmasters to add stuctured data:

by adopting microformats or RDFa standards to mark up their HTML and bring this structured data to the surface. This will help people better understand the information you have on your page so they can spend more time there and less on Google. We will be rolling this feature out gradually to ensure that the quality of Google’s search results stays high

Some more information about Structured data here

More information on Microformats

and more on RDFa