FFXIV Special Talk Session, September 2012 [0.46:20] LINK

Mocchi (reads question): "We can jump now! So, will we be able to fly next? Or swim?"

Yoshida: "In my interviews I said that there's a 50-50 chance for one or the other, but while I was eating in Germany I began to lean heavily towards flying. When you think of FF one of the images that comes to mind is your character flying in an airship. I personally think that would be great. It's also true that XII's airships were very popular, so I would like to take to the skies. However, as Hashimoto is glaring at me, this is something that might come in the form of an expansion pack."

Mocchi: "So it's something that will come a bit further down the road."

Hashimoto: "Yes, it's a bit tricky." (laughs)