Link:
http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9120939&source=rss_news

And what Glue knows about Google:
http://glue.yahoo.com/?query=google

Here was the report when this was added to India. So as opposed to India, the US version will not be connected to Yahoo.com's main search right now, but be a standalone test...
http://blogoscoped.com/archive/2008-05-08-n60.html

Thanks for the background link.