For now, the list of publishers who can use it is small and includes ABC News and Vox Media, and Facebook is keeping the full list of media organizations involved close to the chest. The breaking tag won't weight a post's ranking within Facebook's algorithms. At least not yet. A spokesperson told Recode that part of the test was to decide whether or not a breaking news story should have preference over other posts in the News Feed.

Facebook has been working with news organizations on different ways to post, host and promote their stories for awhile. Instant Articles, for example, were fast-loading versions of news stories hosted by Facebook, made their debut a few years ago. Then there's the split News Feed that keeps posts from Pages and friends siloed off from each other, and the Explore Feed. We've reached out to Facebook for more information and will update this post should it arrive.