It looks like Google is testing a new portion in mobile search result for queries of movies. This section is named as “Extras” & shows more details on the movies from interviews recap & more.
Saad AK notices this and shared this over twitter:
Hi @rustybrick SIR,
Seeing "Extras" Feature in Google SERPs, which consists of (Analysis, Interviews & Recaps) + these are also present in the Sticky Bubble Header (I have attached the image).
It might be new. pic.twitter.com/MX23hrqXiB
— Saad AK (@SaadAlikhan1994) June 16, 2021
Google is always testing such new things, so, this is among one of them.