Para mais informações e para fundir sua conta do WOW com uma conta BNET clica no link abaixoMerge a World of Warcraft account* into a new Battle.net account, and create a single login for future Blizzard Entertainment games.
Beginning with World of Warcraft, the new Battle.net account grants access to Blizzard Entertainment games, websites, and online services - all with a single e-mail address and password. After completing this account merge, you will use your Battle.net login information to play World of Warcraft.
https://us.battle.net/account/creation/landing.xml
* EDIT: Outra coisa que vi apos criar minha conta que alem do Blizzard Auth (chaveiro) vai ter um Mobile Auth (via celular) lokis.