Rankranger, an SEO tool-set, has added a few new features. They are now tracking to see changes in Google Search Results that contain FAQs or how-to markup or display the rich results. Here is a screenshot of their tweet.
This new research tool provides you with trends and insights into Google features. These include trending knowledge graphs, Ads, Images, Local Packs, related searches, and organic search counts in the SERP. The new tools also let you explore and benchmark special page indicators for example breadcrumbs, HTTP, ratings, notable online, image and video thumbnails, search box, site links, Twitter pack, etc.
Here is what Glenn Gabe has to say about the new features.
To know more about the features you can go to Google SERP Features Visual Guide.