Google may show two lines of structured snippets going forward.
Now if you select two predefined “Headers” and define two lists of customized values, they can both show with your ads at the same time — whether that’s a combination of styles and brands or destinations and featured hotels.
Read more on http://searchengineland.com/now-get-a-second-line-of-structured-snippets-in-adwords-text-ads-237747
Original article by Ginny Marvin, http://searchengineland.com/