The new News site features Yahoo's YQ search technology to let users pull up search results related to key phrases or names in stories, without needing to leave the page.
The main difference between Google News and Yahoo News is that the latter has agreements with providers to provide stories for its human editor-driven news site.
Users of the new site also can add RSS feeds, which allow information providers to send headlines broadly across the Internet. In cases where the RSS provider is not a Yahoo partner, users will be redirected off Yahoo News.Yahoo also allows users to send stories via e-mail and instant messengers.
More info at Reuters