Aion is poised to go free-to-play next month and launch a fresh new batch of content, so now is a good time to put on a few more levels before it arrives. Starting on Friday, March 26th, Aion will indulge players with another Double XP and 30% AP gain event weekend. At the same time, the On to Glory event will continue. The double XP and increased AP event will conclude on Monday, March 26th.
Source: Aion website