Not sure if this has been mentioned elsewhere - or if it just sneaked past unnoticed.
During Mark's attendance at GC08, he had a nice photo stream of various snaps taken in and around and on the way to Leipzig. One of those photos was this;
a 60 day game card, picturing characters from Tabula Rasa, L2 (I think), and Aion.
Isn't this hinting rather strongly that Aion's will be a monthly fee based game?