EA has said that Titanfall will remain exclusive to Xbox 360, Xbox One And PC for the "lifetime of the title".
This means Titanfall won't come to PS3 and PS4.
But Respawn Entertainment co founder, Vince Zampella, said in his tweet
"Always MS exclusive at launch, great partner and focus is good for a startup. EA made a deal for the rest, we only found out recently =("
But when he was asked
"so you won't make any games for the ps4 ?? :("
He did replay saying
"Of course we will, just not the first Titanfall."
This means, that if they ever make Titanfall 2, or anything else, that may also come on all / more platforms.