It seems like Yelp won or did they? Google wanted to source third party reviews because their own review database was limited. Yelp wanted to keep getting traffic from Google but not have Google simply source their reviews on their site.

Google updated the place pages and they now have the new overall design, plus remove the third party reviews, except for a small link.

Here is a picture of Airmont Eats place page. I cropped it a bit, but you can see how Google is strongly encouraging users to write reviews, then shows only their reviews at the top with a small link to third party web site reviews from Yelp and others.

Google said:

Of course, those businesses that feel like they “lost” most of their reviews are not happy. We have threads at Google Places Help and Google Maps Help. One business owner said:

I guess time will tell, but I have a feeling those reviews are never coming back, at least not directly on Google Maps.

Forum discussion at Google Places Help and Google Maps Help.