Nowhere in that video nor in the article did it mention that particular video was from PS4 gameplay. Considering that both GameSpot and the French website linked to earlier are using the same gameplay video, I assume it's no more than a marketing trailer. I definitely have my doubts, so it looks like I'll be waiting on reviews for this one or renting it from Gamefly first.
A lot of people are comparing the graphics and art style to GTAV. The art style in GTAV was certainly decent, but the aging hardware made the game look like a jagged mess most of the time. Even so, if that video is in fact an indicator as to what the "next gen" versions look like, I'd be interested to read what excuse Ubisoft comes up with.
PSN ID/XBOX Live! Gamertag: BiffCo