Google AdWords updated call-only ads. Now there are three ad extensions available:
Using location extension can let searchers know where exactly they can call. This will be useful for brands with multiple locations. Thus, the user will know for sure that he is calling a certain office, not the company's common line.
Callout extensions improve the quality of text ad. Daily specials in food delivery services is a vivid example. Users get more information about the company's current news and services.
Structured snippets will help highlighting the features of a particular product or service on company’s website. If customer's preferences are set in his account, the following search for a product in the call-only format will be applied with the same settings.
You can learn more at RACE 2017!