You must have a pvp beta key for this client to work.
Event: April 18 - April 21st.
So far, not off to a good start.
Somehow the idiots at gamespot are the ones handling the client files, forcing you to go through either a torrent with no seeders or use their piece of shit 'download manager' that errors out everytime - on their terrible bandwidth.
For an event that's only 3 days, gamespot really dropped the ball on this one. Hopefully decisions like this aren't a foreshadowing of things to come from AoC.