Google News experiments with a new feature that shows Twitter messages from your friends.
"Friends is an experimental section in the side column that helps you find news articles that your friends are sharing on Twitter. In the open text box, enter your Twitter username and click "Save." Google News will refresh, and you will see a list of updates containing news articles shared by the people you follow. Please note that Friends only shows you articles that can be found in Google News. If someone you follow has shared an article or a link that cannot be found in Google News, then you will not see that update in the Friends section."
Maybe in the future Google News will use your Twitter timeline to customize the list of news articles displayed on the homepage or to annotate news clusters.