As announced about a week and a half ago, the Aion 2.0 Update was released on the Aion PTS (Private Test Server) today. The PTS was completely wiped for this update, so if you had any old characters on the test server, they are no longer there. To make up for this, NCSoft has boosted the XP and Drop rates on the PTS, so you can actually test new things and not waste a lot of time grinding.
For info on how to connect to the PTS check out: http://na.aiononline.com/board/notices/view?articleID=358
Also, just a reminder the Aion 2.0 Patch will be on all live servers on September 7th, and is completely free.