Aion ascends to version 3.1 today with a new patch deployed to live servers. The patch features a number of instance changes, the requisite bug fixes, a new world boss, and 'Fast -Track' server technology.
The fast-track servers are of particular note, as they allow players below level 50 to quickly group up with players and make headway towards the level cap. Given the particular focus of these fast-track servers, there are also a significant amount of restrictions that come with them, including the absence of Rifts, a level cap of 50, as well as numerous economy and social related restrictions.
View the full patch notes over at the official Aion website.