This tidbit of information is coming via Barry Schwartz over at Search Engine Land and apparently is being rolled out on a limited basis. However for those of you lucky enough to be included, Bing News is starting to display related Tweets from Twitter as part of the news search results.
Using the example given by Schwartz the Twitter messages are showing up in a box on the right of your search results. For example searching for Japan will show a list of tweets that include the word Japan, as displayed in his post.
I personally can’t verify this as my testing for the feature doesn’t return the same thing. I can only assume that this is primarily a U.S. feature or that is hasn’t rolled out for the everyone else in the world; which is understandable I guess as this is something that Bing has just launched.