You can find the update notes for this week's game update, Arcanum Revealed, as well as hotfix notes , in the Game Update Notes forum on the Official EQII forums.
We'll also have a short hotfix on Thursday morning, October 14, with servers coming down around 7:00am and expected to be back online an hour later. Remember to keep an eye on the Official News and Announcements forum for downtime notices.
Happy adventuring!