From the PlanetPlayStation.com feature list:
"Everybody’s favorite dystopia tale is back and quite possibly better than ever. Irrational Games’ third installment in the Bioshock series promises the most fulfilling and well-rounded first person shooter/RPG experience of the saga with it’s similar, yet contradicting elements. Bioshock Infinite’s brand new world is definitely much brighter and more highflying than the previous two games, preferring to take place in broad daylight atop a floating city (as opposed to the bleak and murky settings of the underwater metropolis of Rapture.) But, will simply changing the contrast of the game really be reason enough for us to buy it?"