That's part of the social sharing set of features. The initial implementation in v19 includes limited linking to a publication URL through a Facebook option in the viewer. In the May release, it's possible that that social media links will display an HTML representative of the DPS article in the desktop browser.
Thanks for the addtional info. Two followups, if I may. (I'm planning for a future app release right now, which this could be relevant to).
1. Is this meant to be an HTML version of the entire publication, or simply a display of a single article. (Your response implies the latter)
2. In either case, is this based on Flash or HTML5?