NCsoft has released a new Aion trailer, this time showcasing the 2.5 update, called Empyrean Calling, which will go live on European servers on 25th May, 2011. The update will feature new instances, quests, graphical enhancements an improved graphics engine, new characters customization options, new pets with special capabilities and more. The public test server (PTS) will go live today, allowing a sneak peak of the new 2.5 update.