The new AdSense interface includes more detailed performance reports and enables you to view daily stats in graphical formats. It also will provide you with additional metrics such as the amount you’ve earned from various ad, targeting and bid types.
Google has also continued to make improvements to the Ad Review Center. The new enhancements will now allow you to have more options with regard to managing the ads that appear on your site, as well as a cleaner interface that makes it easier to find and review them within the Ad Review Center. I have been using the new interface and it is clearly a much improved design and interface.
But the Beta version of this new interface is CLOSED, only the people choose by Google can joined in this beta :( but there is a one possibility, in the next weeks will start another thousand accounts. We will notify you by email if you will be chosen.
via Jeff Weisbein