Anyone hoping to see Titanfall 2 at E3 this year can put that dream in a little box and save it for later. Respawn boss Vince Zampella has confirmed the studio won't be revealing anything at the show this year, in a tweet. This tweet in fact:
For everyone asking, we aren't showing anything at E3 this year. I'll get to actually see all the games!May 29, 2015
While there's been no official reveal as such yet, Zampella and various other Respawn people have been very vocal about developing Titanfall 2 on PS4. There were even a few rumoured murmurings at an EA/publisher level that the Xbox One focus damaged the game's potential reach. Back when the original deal was signed those dominating PS4 sales hadn't happened yet and afterwards there was allegedly a 'this is what you could have won' sales prediction meeting with Sony.
So no Titanfall 2 at E3 this year, but my money's absolutely on it being multiformat when it does appear.