The number of reports I have been receiving on Google showing 12 huge sitelinks in the search results has been overwhelming. Personally, I still cannot replicate the huge sitelinks.
It isn't new, we reported about jumbo sized Sitelinks back in April of this year. But it seems like Google is slowing rolling it out, maybe internationally first.
A WebmasterWorld thread has discussion around the new sitelinks, with a picture as a demo.
As you can see, this takes up most of the Google's search results real estate. Good for online reputation management, but not too great for others who want to rank well for those brand names.
That being said, it seems like most of those who are seeing this are from searchers outside of the US.
I am not sure I like this at all. Do you?
Forum discussion at WebmasterWorld.
Update: This is now official.