Google announced the roll out of the new callout extension for AdWords ads. As per the Google, the new extension allows advertisers to display additional information about products and services directly in the AdWords Ads and will be made available to all advertisers progressively over the next weeks.
Callouts are limited to 25 characters each and up to four can show with your ad. You can use this space to draw attention to sales, special events, or anything that may differentiate your organization from your competition like free shipping or 24/7 tech support. You can even use them in conjunction with other ad formats.
The goal of Callouts is to show valuable information to potential customers before they click your ad. Callouts will also be a factor in Ad Rank.