Damn, that sucks. Given that he just got the news, I wonder how much effort his studio has spent on the investigation of a PS4 port for Titanfall. Granted, as it's before launch even on its target console, I'm guessing its not much, but any engineering effort lost for a company as new as Respawn has got to suck.
I hope Titanfall does well. I used to live and breathe FPS games, and I'm happy to see some of the mechanics I liked from previous franches (wall jumping, especially) re-emerge.
Honestly though, I hope the PC version blows the other versions out of the water. Until someone figures out how to bring up the skill cap for controllers, the PC will still be the platform of choice for FPS games.