Open Beta draws to an end and Acclaim is hosting a couple events to thank their testers. One event gives players two hours a day to earn double XP before the beta closes, while a second event on Saturady is a PvP clan war.

Double XP
Earn double Experience Points on Fri, Sat, and Sun
4-6pm PST on US server
4-6pm GMT on EU server

Black and White Clan War (Sat Only)
Starts at 6pm on both US and EU servers
(This event will be turned off if no winner is declared by 9pm)

New PK server coming on April 9
Engage in combat with rival clan members in designated PK zones

You can read the details for yourself over at the 9Dragon Site!