Silvery - 3:59 am on Jul 14, 2010 (gmt 0)
One of my coworkers has sporadically received the beta listing treatment, and he's been sharing screengrabs and comparison notes with me.
In one respect, we find it particularly worrisome for small, local businesses because it may reduce the real estate on the page for them. While the unified/integrated listing is larger than the 7pack text listings, if you previously had both a 7pack listing plus a top organic SERP listing, you end up having fewer links and space on the page.
Plus, PPC advertisers get pushed down lower in the sidebar...