OMFG!Aion is sooooo coooool!!!Tell me bout it!?

I just bought GW Nightfall, and in the NCSoft mini mag I got in the pack, Ive seen the article about Aion, a new mmorpg by ncsoft.So I looked youtube for it and it looks SO AWESOME!It says its based on the crytek engine.The japanese already have Aion,(cuz stuff always gets to asia first, damn...)so can sum1 tell me whats Aion bout; do u pay the monthly fee, how many levels are there etc.