Now you can deliver highly engaging ads from leading brands. Optimized for your app, pre-roll video and full-screen interstitial banner ads are now available on iOS. Learn how to integrate them into your app by reading Implementing iAd in Your iOS Apps.
Full-Screen Interstitial Banners:
iAdInterstitialSuite allows an ad to be displayed as a page of content, and as a transitional screen between two sections of an app.
Pre-Roll Video Ads:
The MPMoviePlayerController reference includes configuration details. Videos that are 15, 30 or 60 seconds in duration are supported.
More details at the link below.