Google announced a new extension for AdWords advertisers named structured snippets.
Structured snippet extensions gives advertisers a method of providing structured information that show with your text ads.
Here is the example give by Google:
From amenities to brands to product types, you’ll now be able to select a predefined “Header” and input a list of customized values that make the most sense for your business. For example, if you’re a hotel brand promoting hotel property, you can now create a structured snippet for “Amenities” and order them accordingly.
More features like these help advertisers really differentiate their ads.
Forum discussion at Google+ and WebmasterWorld.