The following English realms will open at TBC launch approximately 00:01 on the 16th of January:

Normal (PvE)
Hellfire
Ghostlands
Nagrand

RP
The Sha'tar

PvP
Auchindoun
Karazhan
Shattered Halls

RP PvP
Sporeggar

Battlegroup
All these realms will be together in a new Battlegroup. Name yet to be released.

All these realms will be no-migration realms, and thus will not see players transferring to them until the PCT allows such when the realms are 6 months old.

Update: the realm forums for these realms are now open. Right this way —> http://forums.wow-europe.com/child-forum.html?forumId=11101&sid=1

http://forums.wow-europe.com/thread.html?topicId=108440927&sid=1