Final Fantasy XIV: A Realm Reborn. OK, so the flying kitten creatures are actually called delivery moogles, and thanks to Square Enix's newly released video tour of Gridania, players can get a look at them (along with all the other changes) for themselves.
Clocking in at almost five minutes, the video shows off alpha footage of various parts of the serene city-state, including cobblestone paths, waterfalls, and plenty of lush greenery. Take a look at the city reborn after the break.
[Thanks to Moises for the tip!]