we really can't talk about it...because well, we can't

This is what has been said on the lodestone:

Quote Originally Posted by Bayohne View Post
Greetings everyone,

Thanks for your patience while we gathered feedback from today's announcement.

We will have one data center that houses the North America/Europe servers. In the future, we may create additional data centers based on a variety of factors, but currently we have set up one to house the servers created for the NA/EU territories.

I know that there are some that are concerned about latency issues and I can say that we chose the location of the North America/Europe data center after conducting numerous tests from various locations and ensuring that it covers multiple territories.

In phase 3 of the Beta Test, you'll be able to choose your World freely, so please try out servers located in both the Japan data center and the North America/Europe data center. This way, you'll be able to see which fits your needs the best and ensure a great gaming experience.

Yoshida recently made a lengthy post on the topic that we're currently translating and we'll be sure to share it with you as soon as it’s complete.

Thank you again for your continued support.
and this

http://lodestone.finalfantasyxiv.com...a9678758c91b95

and there's this blog post:

http://na.finalfantasyxiv.com/blog/post/361


Logic would dictate that in order to serve both the NA and EU region, you'd most likely need to place said server somewhere in the Eastern part of NA.