Originally Posted by Sabretooth
My current theory is that if at all the game exists, it's some kind of an amusing 2D parody (Eidos did after all go out of their way to trademark it); while Deus Ex: The Fall is the real title of the next game, likely revealed at the Xbox event or E3.
The squares in particular make me think it's going to be pixel art. If it's a 2D indie pixel art game, then it may actually have Adam Jensen, be a game and be based on a "new engine".
You talked to someone on the inside, didn't you.
I remember having this picture
of what appears to be a pixelated Human Revolution game on my computer for quite a while. Reverse image searching it leads to this blog post
by what I assume is Jonathan Jacques-Belletete, art director of Human Revolution, and one of the guys in the Defiance video. Note the posting date. This may not be a joke after all - this fan art could have been the source of the inspiration shown in the video.