Ruben Gomez posted on Twitter yet another Yahoo Search test. This one is with the top search bar you find on many of the Yahoo properties and of course, on Yahoo Search.
The new search bar is taller and more spacious, the overall bar itself is also taller. The search button has a magnifying glass instead of it saying "search" in a purple background. It is significantly different.
Here is a screen shot of the test:
Here is what most people will see:
Forum discussion at Twitter.
