En Masse Entertainment has announced that the TERA update, "The Argon Queen", is now live. The update brings a ton of new content on board as well as class changes, new items, battlegrounds, dungeons and more. En Masse has posted the official patch notes as well.
The Argon Queen update infuses the world of TERA with the greatest challenges and most worthwhile rewards players have seen to date. Break earth on the battlegrounds. Group with up to 20 players in a raid to tackle the nexus. Try out new tanking skills in top-level instances. Show the argons—once and for all—who’s boss in TERA.
Read the full change log on the TERA site.