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Google is testing using the bubble design for the search tool bar. The search tool bar is what is by the search bar, that let's you filter your search results by search vertical, like Google News, Google Images, Google Maps and more.
Jessica Peck spotted this and posted a screen shot of this on Twitter:
You can click on it to enlarge. Here is what you should normally see:
So which do you like better?
Forum discussion at Twitter.
