Ol’ Eagle Eye, Matt Gregory, caught a change that I had anticipated. The Local OneBox has been upgraded to the same format as the other OneBox results. The Onebox display, in general, was upgraded earlier in the week in the week to match the mobile display. Note that the user now needs to click into the photo to see more. Whether part of the change or not, fewer review sites are now showing as well.
Local Onebox Display Now Upgraded to New Universal OneBox Display by Mike Blumenthal