Google has quietly added two temporary but new structured snippet extensions to AdWords for advertisers to select. Kim Clinkunbroomer spotted this and posted it on Google+.

Black Friday on November 27th and Cyber Monday on November 30th, are two of the busiest shopping days of the year. Google added two temporary headers are available to help you highlight your holiday promotions within the structured snippets.

Here is when they are valid from/to:

Here is what it looks like within AdWords:

You can learn more about this in the AdWords help area.

Forum discussion at Google+.