http://forum.square-enix.com/ffxiv/t...67#post2919167

It will not be possible to fly in A Realm Reborn areas, as the maps were not originally designed to allow for flying. We might address this one day, but for now we would like to focus our efforts on adding new areas.
Might happen, might not. Either option works for me.

But, I think most of us would be happy to see new areas.