The video snippet shows what seems to be an instanced quest with a party of 2. It starts by showing NPC interaction with a system thats VERY similar to Mass Effect dialogue where the player can select from a number of options to respond to the NPC with a dial.

Although the video is about this experience with a look into how they go about getting the voices into the game, the real juicy information is in the footage between it.

Real Gameplay moments are featured including the GUI and skill useage from what looks like the Sith class. If you look close enough you’ll notice his name is Darthevil with another player in his party.

The usual features can be seen in the UI including the Experience Bar, Mini Map, Skill bar with 5-6 skill icons listed, party frames and a chat window.
This is all followed by what looks like to be a channeled skill which the sith performs near the end of the film.

Seems that the UI captured from the World Design video was the real deal after all.