The Google AdWords blog announced they have added an ad extensions tab to campaigns with ad extensions as an option.
Ad Extensions are features that can be added to your AdWords ads and include Ad Sitelinks, Product Extensions, Video Extensions, Location Extensions, Multiple Addresses for Location Extensions, and Click-to-Call Phone Extensions. To learn more about these ad extensions go here.
To see the new ad extensions tab in your AdWords account, you must have enabled ad extensions in at least one campaign. Within this tab you can see the statistics for any of your campaign ad extensions. You can specify if you want to see all or all but deleted ad extensions and even filter them by the ad extension type, as listed above.
Here are some screen captures: