#5 - July 23, 2010, 10:42 p.m.
Should you receive a World of Warcraft: Cataclysm beta invite, Lilestira, it should appear on your Battle.net Account Management main page (
https://us.battle.net/account/management/index.xml) under "Your Game Accounts."
Since the StarCraft II: Wings of Liberty beta has ended, though, this is why it is no longer appearing as an available license.