More folks are reporting the visibility of the 5-Star system on the main search results that Google has been rolling out. I am seeing them at work in Chrome on my Mac but not in Safari or Firefox and I am still not seeing them at home. There were also reports of them being seen in the Netherlands so they are obviously going global simultaneously.
I was surprised to see that the same orangey color was being applied to both rich snippet reviews AND to AdWord reviews. The orange is very visible on the Local Carousel but less so against the white background on the main search results. It would be interesting to see an eye tracking study to see if they disrupt searcher behavior as much as the yellow color does.
The 5-Stars have been permanently moved onto the G+ Page and the new Maps and are still intermittent on the desktop. They have not yet been spotted in mobile search or on the old Maps yet.
(click to view larger)Google's 5-(orange) Stars Spreading Internationally, to Adwords & Rich Snippets by Mike Blumenthal