(Source) The Aion 2.5 update, Empyrean Calling, will be available for download for the player test server (PTS) today, May 5, 2011 at 12:00 p.m. PDT. We are also excited to announce that Empyrean Calling will be going Live on our NA and EU servers on May 25, 2011! We will be holding several mini-events on our Live servers to celebrate the approaching 2.5 update.
If you already have the PTS game client, your launcher can incrementally download the 2.5 client. If you do not already have the PTS client, you can also download the full Aion PTS 2.5 client as an FTP download. Visit our Aion 2.5 PTS FAQ for details on downloading the full 2.5 PTS client.
Our team is pleased to present our Aion 2.5, Empyrean Calling Highlight Video with a sneak peek of the Aion 3.0 update! You can learn more about the details of this exciting new update in our 2.5 Patch Notes! On May 12, 2011, you will be able to log in to the PTS and experience Aion 2.5 Empyrean Calling yourself!