Roughly 1/7000th of the people in the real world are currently registered and anticipating the beta events of The Secret World. This weekend will be the first beta event, open to everyone who pre-ordered the game alongside others who have reached a certain rank in "The Secret War social experience." I assume the most hardcore of Secret World fans are well aware of that, though.
This first beta event is titled "Kingsmouth Calling" and will put you in the shoes of one of the Templar initiates. Kingsmouth is under attack by mysterious forces and who better to help stop them than you and everyone else who pre-ordered? Personally, I can't think of anyone better for the job.
More details, including a FAQ can be found here. The game officially launches on June 19th.