Call of Duty: Ghosts will see a proper, large increase in the graphics department versus its predecessors, but from what we've heard this will be happening at 720p on the Xbox One from Microsoft.
News is breaking now that COD: Ghosts will run at 1080p on the PS4, which is an interesting turn of events. The news was confirmed by VP of Publisher & Developer Relations at Sony Computer Entertainment America, Adam Boyes, when he spoke at the Brazil Game Show. Boyes confirmed that Call of Duty: Ghosts is "native 1080p on the PS4."
So those in-game dogs are going to be looking mighty, mighty fine. Remember that COD: Ghosts requires a 64-bit OS and 6GB of RAM on the PC, so we should expect some high-fidelity graphics from the COD series, which will be a nice change.