Just got this message from Google today:
———- Forwarded message ———-
From: Google AdSense
Date: Mon, Sep 26, 2011 at 4:37 PM
Subject: We’re soon retiring the old AdSense interface
Since releasing the new AdSense interface to all publishers, we’ve been continuously working to improve and support the new version. With that in mind, we’re writing to let you know that we’ll soon be retiring the old AdSense interface and asking all publishers to use the new interface.
If you haven’t already, we recommend switching to the new interface as soon as possible to familiarize yourself with the updated layout and new features. To do so, sign in and click the ‘Try the new AdSense interface’ link in the upper corner of your account. We understand that this adjustment may take some time, so you’ll still be able to toggle back and forth between the old and new interfaces during the coming weeks. You’ll see another notification in your account as we approach the date when this option will no longer be available.
As a reminder, the new AdSense interface offers additional insights in the form of detailed graphs and reports, new ad blocking controls, and increased efficiency through a visual redesign. We’ve now added many of your top-requested features — including the ability to create scheduled reports and view channels on the Home tab. We encourage you to watch our video tutorials at http://www.youtube.com/user/InsideAdSense#g/c/B067D355E59D96E0, which will guide you through completing common tasks in your account. You can also find detailed information in our Help Center for the new interface (http://www.google.com/adsense/support/as/).
With this transition, we’ll be able to focus on building new and improved features into the new interface more quickly. Thank you for your support, and we appreciate your patience and cooperation.
The Google AdSense Team
Email preferences: You have received this mandatory email service announcement to update you about important changes to your AdSense product or account.
1600 Amphitheatre Parkway
Mountain View, CA 94043
Looks like the old familiar interface will be deprecated soon – RIP content money making machine (aka: old buddy!)