Lotro has this where it's an optional feature you're prompted upon when downloading the client. You either say yes and get the better textures, or no and stay with the older ones whilst all content going forward is produced with more attention and care. Frankly I'd kill for something like this as there's some comically BAD texture work in this game that was forgivable when the PS3 was an issue but now it's just kind of there even as the developers strive to do better. (Though judging by the texture quality of Edda's dress, they can still be very lazy when they want to be.)