Google sent me an email containing new features of Google AdSense:
Detailed account reporting: With the introduction of 'channels,' you now have the ability to track the performance of your pages to any detail level of your choice. By grouping your pages into channels, you can view detailed reports by domain performance, ad format, content topic, or any other criteria that you choose.
Downloadble reports, new alternate ads and framed pages support are the rest of new features.