That's because they aren't available yet.
According to the Camelot Herald:
Quote:
Remember, everyone – in order to check out the two “preview days” of Gareth and Lamorak (scheduled for July 12), and get a head start on character creation, your account must have been activated on or before July 1. The servers will be open to everyone with a current account on July 14. As always, watch your Herald for updates.
Or you can read the full link
here.
Edited, Thu Jun 23 20:59:46 2005 by CipherSavant