The only thing that seems to be confirmed, is that Ishgard apartments are coming soon. However, the word "apartment" is apparently translated to mean "mansion" or "manor", or some such thing, so people are hoping for more than just an FC room.
I like the neighborhood idea... it's perfect really. However, if you don't have enough server space to offer a house for every player, you've got a problem. Instanced housing has been a staple for MMO's forever... it isn't as amazing as a real neighborhood would be. But if you don't have the resources available to support it, the vast majority of players are left out in the cold. They really should just bite the bullet and create instanced housing. Apartments, manors, upgradeable dwelling instances in popular zones. I'd love to own an instanced house where I can build a carpentry room, bedroom, mini-farm with gatherables, trophy room with mannequins, etc..... They shot for the moon and missed, so to speak. Time to fix the problem.