Using AdSense Mobile? Your Code Expires on May1, 2012

To make it easier for publishers to use AdSense to monetize mobile web pages, we’ve migrated all mobile ad unit sizes, including the mobile banner ad unit, into the core product.The new AdSense ad code automatically formats the ads for the device. We will continue to support high-end ad requests from our AdSense for mobile content product until May 1, 2012. We strongly encourage publishers who have designed mobile web pages for high-end devices to use the new AdSense ad code to avoid disruptions to service. Note that publishers with mobile websites built for WAP browsers should continue to monetize using AdSense for mobile content.