I just saw something new, for me at least. I had noticed that one of my sites has begun getting considerably more traffic from Google, apparently starting some time yesterday. So I checked the rankings for one of the main keywords, and my page appears to be a "featured result". There's one ad at the top, then my page with a box around it and a quote of the article's whole first paragraph immediately below the ad, then the main organic results begining with a wikipedia article. There is no Knowledge Graph on the right side, but my page's listing looks very similar to a Knowledge Graph box, except that it's on the left below the ad but above the organic results. Usually my page ranks in the 4th or 5th organic position for this search, but somehow today it's been chosen as a "featured result" and put at the top with a box around it.
I've just done some other searches, but didn't see this again.
Has anyone else seen this? I'm calling it a "featured result" for lack of a better description.