Google Search has these "more" links in the Google search ad listings that expand to show more ad extensions. I am not 100% sure if it is new or not but I personally cannot replicate this, so maybe it is new?
Here is a screenshot from Punit on Twitter:
Again, I am not sure if this is new, for some reason, I think I've seen this before, but I cannot find it in my coverage.
Have you seen this before?
Forum discussion at Twitter.