Earlier this month, we reported that AdSense was testing new arrow formats in their ad units. I personally didn’t see it, but it seemed like others were seeing various tests.
Google has finally confirmed the tests in a blog post that says we should notice new types of arrows that are more visible. The blog post said:
I now see the difference on my personal blog.
Old Arrows from June 2008:
New Arrows:
Small but noticeable difference.
Forum discussion at Google AdSense Help.