New AdWords Layout Being Tested?

I reported at the Search Engine Roundtable this morning that people are noticing a new layout for the AdWords ads on the Google search results page. The new layout shows two ads at the top and four ads at the bottom of the results. There are currently no signs of ads on the right hand side of the page. You can see an image of the ad at my blog by clicking on the image. I started a rumor that possibly Google is saving the right hand side for Ask.com zoom like features (i.e. refine search, etc.) but that is pure speculation and Google may not even use this user interface in the future.