Quote:
The purchase of housing will be unavailable on the newly established Worlds at the launch of Patch 6.18. Before we can resume the sale of plots, we must first verify that the Japanese/European data center expansions and the Data Center Travel system are stable, then re-enable the Home World Transfer service. For the latest updates regarding the availability of housing on the new Worlds, please visit the Lodestone.
Since they will have some wards restricted to FC purchase, there's really no reason why they couldn't open up housing for personal purchase faster as it would not affect the ability of FCs to obtain houses once they're past their 30 day waiting period. It would create an incentive to get more players to transfer sooner to the new worlds.