NCSoft and the Lineage II development team are throwing a three week long party to celebrate the game's 7th anniversary. During the festivities, players will be treated to double XP weekends, subscriber gifts, account reactivation, special quests and more.

• Double XP and SP and Free Teleports (April 20 - April 27, 2011): Celebrate the seven years of Lineage II with seven days of double experience points and skill points gained from hunting monsters as well as seven days of free teleports.
• Anniversary Account Reactivation (April 20 - May 4, 2011): On April 20, we reactivate all inactive accounts in good standing so that veteran players can join the 7th Anniversary Celebration to play for free! (And no, we're not charging you to play nor are we changing anything about your account's payment options)
• Subscription Anniversary Rewards (April 20 - May 4): Receive one of a number of special subscription anniversary Rewards with your subscription purchases ranging from a Hero’s Treasure Chest to a 7th Anniversary Cloak.

Read more on the Lineage II site.