Posted Mon, Sep 03, 2012 by Martuk
On the subject of server mergers, Celestial Hills will not be merged with any other servers, but the remaining servers will be merged down into two and they are as follows:
The following servers will be merged into 1 (currently unnamed) PVP server:
The following servers will be merged into 1 (currently unnamed) PVE server:
You can read the full Server Merges FAQ for more details and what you need to do to prepare for the coming merger.
Source: TERA Fall Producer’s Letter