http://stevivor.com/2016/10/titanfall-2-isnt-native-4k-ps4-pro-stable-frame-rate-resolution/

“We did not get much of a heads up, like most people,” said McCoy. “So we didn’t get a tonne of time. Like no one even knew about it until….I don’t even know, but it was late. Since it’s just the PS4, but faster, it’s really not that hard to say ‘when running on PS4 do this, and when running on PS4 Pro do that.’'....

“Because we also made the PC version, we have some nobs we can tweak, so we just spent some time making sure it still runs well and looks good on PS4 Pro. You know, making sure it doesn’t look any worse at all. That’s the requirement: it can’t run any worse or look worse than on PS4. So it runs better, looks better and has no bugs on PS4 Pro.

And from Respawn on gaf: 

Not sure where you're getting that. Yes it runs higher than 1080p on PS4Pro.

(Not sure how explicit we can be yet, but wanted to correct that at least.)

They didn't say anything in the end kkkk

I have no idea what the improvements are after reading that. I'm getting a Pro, though.

I left this thread with as much knowledge as I entered it with.

Which, according to my wife, isn't much to begin with.

well that's great 

Is there any technical breakdown yet?

I can guarantee this is not true. There will be bugs, just like in practically every other game. I'm guessing he meant there won't be bugs that aren't on original PS4 as well.

Since I'm playing on a 1080p TV, I'd be happy with it running at that resolution with a more stable framerate (the beta on ps4 had more frequent framedrops than I expected, not horrible, certainly, but noticable for a fast-paced game like this) which this sounds like. That makes me happy for now, though it does sound like games will be receiving more substantial upgrades as devs actually get more time with the Pro (garnered not from these quite vague statements, but from a combination of threads like these). Not a surprise, really.