Apple has updated iAd Producer (http://developer.apple.com/iad/iadproducer/) to version 4/2. It gives developers the ability to display full screen banner ads in iOS apps. It also adds the ability to upload projects to the iAd Workbench campaign management system.
iAd Producer automatically manages the HTML5, CSS3 and JavaScript behind your iAd. It offers JavaScript editing and debugging, along with an extension mechanism that enables them to create and re-use their own page templates and components.
iAd Producer a free download for developers at Apple’s developer web site.