There's one major feature in this release, the ability to render tweets.
A tweet is a headline whose type is tweet. They can appear in any kind of page, of any type.
This page is of type outline, and here's a tweet:
Today's Scripting News background image is rebeccapurple, a new web color. http://t.co/5VtNerMDAA— Dave Winer ☮ (@davewiner) June 26, 2014
This is the Fargo side of the connection with Happy Friends.
There is a blog post on the Happy Friends site that explains the hookup from that side.