It looks like Titanfall might end up being a timed exclusive for Xbox One, Xbox 360 and PC as opposed to being an outright exclusive for Microsoft. The PS4 and PS3 might get this ground breaking FPS game in the near future. Of course this is all speculation based off a youtube video. If Titanfall does make it to the PS4, I'll definitely buy it.
Rumors have been flying since the unveiling of Titanfall that the game would eventually come to PlayStation 4 and PS3. Most gamers suspect Titanfall to be a timed console exclusive on Xbox 360 and Xbox One, and Respawn Entertainment has even hinted as much, saying that a PS4 version is "definitely not out of the question."
Some potential evidence has surfaced in an exclusiveinterview with Respawn. A post on Gaming Bolt (via NeoGAF) has pointed out that the video shows a DualShock 3 controller in plain sight. Meanwhile, a blurred black box bears resemblance to a PS4 or PS3, and could be a dev kit of either.
Go to 2:38, there is a censored out Playstation system with PS3 / PS4 controllers sitting near the monitors.