Kinda need to know what kind of TV it is. If it's a Samsung, it should go away fairly quickly, like in the next couple days. If it's a Panasonic, it will typically take a little while longer to get rid of. But unless the images were on screen for a whole day, there's not much chance of the image retention being permanent.
@humanity: Yeah, even though the install size I feel didn't quite match up to what I saw on screen, I agree. It ran buttery smooth on my PC. I would take larger file sizes if it meant every game ran that well.
I feel bad that I haven't finished this yet. I've been stuck in the Ellie mission in the snow where you fend off zombies with that guy. I can't seem to get past it for some reason. So I haven't picked it back up for months.
Haven't really used my PS4 much due to lack of games currently. But in the meantime, I'm still playing Super Mario 3D World, and it's definitely in my Top 5 of 2013. Plus Pikmin 3, Wind Waker HD, Wonderful 101, Rayman Legends, and the new NES Remix have all eaten up a lot of my time. I can only imagine how little sleep I'll get once Donkey Kong Country Returns: Tropic Freeze comes out.
Plus, I never expected it to become my main media streaming machine, but it has. (Overtaking my PS3, which has been having some weird audio sync issues on Netflix and Hulu lately.) It's nice to be able to watch Netflix or Youtube, and instantly switch from the TV screen to the gamepad for watching.