Plamen Barzev alerted me to the existence of a local listing display that includes a video. The display showed for the search term plumbing charleston sc on the listing for Tamsberg Plumbing. Their site is a single page site done by Localedge.
Whether this is a test or a new display type is unclear. When you look at the underlying code and compare the video listing (C) with the B listing you can see that Google is using a different display class. When you examine the underlying HTML most of the listings share a class of “g”, the video listing however shows a class of “g videobox”. Why it is missing the address and pin though is unclear.