I present another example "HP 2310m" Before: http://www.google.com/webhp?num=100&hl=en&safe=off&#... After: http://www.google.com/webhp?num=100&hl=en&safe=off&#...
Major differences are that other than the CNET review the new listings are completely dominated by retailers. All the way to page 3. Compare that with the old listings where you see a mix of retailers and other product-centric sites (review sites and forums specifically).
The other major difference is the presence of a Google Products "One Box" in the new listing. I saw this in other examples as well where the Google Products section shows up a lot more often. And product centric sites are being dinged.
I'm seeing us (ProductWiki) and sites in the same space (Retrevo and TestFreaks) have been dinged. The difference between us and those other two sites is that we have unique original content from our community. Traditionally this has served us well by getting better rankings usually (we follow the make a good site and Google will reward you philosophy), but it seems like we're being lumped in with those guys now.
From an optics standpoint this really doesn't look good. Shut out the product listing sites and start promoting Google's own product listings a lot more aggressively.