SE will most likely distribute the current servers across all regional datacenters, and then add a few new servers to each datacenter for the PS3 and New PC players.
For example:
JP Datacenter --- NA Datacenter--- EU Datacenter
----Ridill----------- Masamune-------- Durandal
----Aegis----------- Gungnir--------- Sargantas
---Balmung--------- Hyperion--------- Excalibur
---Ragnarok
--New Server------ New Server------- New Server
--New Server------ New Server------- New Server
- Current player will be able to move to the region of their choice
- New Players will be able to start in the region of their choice on a new server / existing server
- Existing players will be able to create a new character on a new server in the region of their choice
The only problem is that you may not be able to stay on your current server name, if you want to move to your local region.