I covered this a few days ago at Search Engine Land but now it made it's way to the forums.
A WebmasterWorld user caught Google testing displaying the site's destination URL not at the bottom of the search snippet, but above it, between the title and the description of the organic results.
Here is a picture:
Here is what I see, the norm:
We know Google has tested this with AdWords ads in the past.
Some like the new URL placement and some do not.
Forum discussion at WebmasterWorld.