Google seems to be heavily testing a new search results interface. Outlined search result snippets with a shadow effect. So the snippets that are boxes in, look a bit raised off the web page.
I am not sure if Google is launching this now, if it is rolling out to all searchers, or just a pretty big test. I personally cannot replicate this on my browsers or connections.
Here are screen shots from Twitter of what it looks like (click to enlarge them):
Here is what a normal one looks like in Google:
Here are more screen shots from Twitter:
Do any of you see this shadow look on Google’s search result snippets?
Forum discussion at Twitter.