So, that previous article was an introduction to the Forgotten Waters App and how it will integrate with the game. In this preview, it's a more direct look at the app and actually how it looks and works as you're playing. Have yourselves a look.
From the post:
Whoa, slow down there, swabbie! Before ya hop on that pirate ship, yer gonna have to access the Forgotten Waters web app at: fwcrossroads.com. This here fancy contraption is needed for yer piratey adventure. You can download it to yer phone fer easier access from here on out, and then an internet connection won’t be needed.