As announced on the official sites for the game:
Quote
April 13th will mark the start of a several month trial period with our
rifting event, ‘Behind Enemy Lines’. During this trial period we will be
running the event every other week; allowing for a repeating cycle of one
week with the rifting event settings and one week without the rifting event
settings. Our goal is to bring this event to our servers on a more regular
basis, so that all of our players can have a chance to enjoy the different
kinds of content that Aion has to offer.
Starting Wednesday, April 13, 2011 after maintenance, we are starting the
first week of the Behind Enemy Lines Recurring Rifting Event! This week’s
portion of the recurring rifting event continues until April 20, 2011 and
will end at maintenance. During this rifting event, we’ll remove the
defensive buffs in Heiron and Beluslan. The defensive buffs will remain in
place in Eltnen and Morheim.
Happy Hunting, Daevas!
-The Aion Community Team


