Noticed the new layout today and I really like it.
- Ads moved to top and bottom of page from their original position on the right sidebar. I like it, but it certainly deviates from the Adwords layout in the regular serps, Google Groups, Google Directory, etc.
- The store names on the left hand column used to be just a list of the stores on that page of results. Now the list includes all of the stores returned within the results, regardless of which page they are on. Very nice for the guy that doesn't appear until several pages down.
- The links in the left column for sorting are now off to the right in a drop down menu. Seems like it is a bit less cluttered. Less clutter on left with relevance, price sort, merchant rating, product rating on right side of serps
- Clicking on the compare prices button lists the top result's picture, description, title, etc, with the other results listed below in order from low to high price. Looks like a very nice deal for the guy with the lowest price and the guy with top ranking.