The free character migration is available from July 1-7. This action is to balance out factions on specific servers.

Alliance only:
From: Burning Legion, Grim Batol, Ravencrest, Sylvanas and Silvermoon (PvE)
To: Magtheridon and Vek'nilash

Horde only:
From: Al'Akir, Kazzak, Magtheridon and Stormscale
To: Burning Blade, Neptulon, Tarren Mill and Trollbane