#1 - Dec. 11, 2013, 5:22 p.m.
Blizzard Post
The following Free Character Migrations are scheduled to be available until December 17, 2013:

Horde
Kazzak (PvP) -> Tarren Mill (PvP)
Kazzak (PvP) -> The Maelstrom (PvP)
Ragnaros (PvP) -> Tarren Mill (PvP)
Ragnaros (PvP) -> The Maelstrom (PvP)

Alliance
Sylvanas (PvP) -> Tarren Mill (PvP)
Sylvanas (PvP) -> The Maelstrom (PvP)

Both
Draenor (PvE) -> Magtheridon (PvE)
Outland (PvP) -> Burning Legion (PvP)
Silvermoon (PvE) -> Magtheridon (PvE)
Stormscale (PvP) -> Ravencrest (PvP)
Twisting Nether (PvP) -> Frostmane (PvP)


Please note: FCMs are opened based on realm population tracking and analysis, not by request. If you’re looking for a specific migration (from realm A to realm B), you should in most cases use the Character Transfer service.

Character Transfers (CT)
All realms follow the regular CT rules, found here:
http://eu.blizzard.com/support/article.xml?locale=en_GB&articleId=20416

Guild Transfer: Although Free Guild Master Realm Transfers are not possible at this time, the Free Character Migration will allow you to retain your guild membership and reputation, provided that the guild master completes a Guild Master Realm Transfer first and the faction remains the same as that of the source realm.

Please note that the FCM service can be closed at any point in time.