Google is testing a new format for Sitelinks. We received official confirmation from Google on this test at Search Engine Land.
The new sitelinks format gives you several categories of Sitelinks in a tabbed format. Many are calling this Tab Sitelinks.
Here is a picture from the Warrior Forum:
I personally cannot replicate it but I wonder if this clutters the interface more than it is useful? Shouldn't Google be able to figure out which types of Sitelinks the searcher wants and just show it to them as opposed to giving the user so many options?
For more on Google Sitelinks, see our Sitelinks category.
Forum discussion at Warrior Forum.