Looks like Google is testing yet another layout for the top stories news box in the Google search results. Mateus Nunes from LiveCoins in Brazil sent me a screen shot on Twitter, where you can see this layout has a multiple layouts.
Here is his screen shot (click to enlarge):
We've seen Google test the top stories layouts many many times over the years.
Update: I am now seeing this layout when I searched to see if it came up:
Forum discussion at Twitter.
