Just in case you haven’t heard already or didn’t play yesterday/today: Blizzard has released the 2.4 patch (291 MB) today. The patch notes can be found here. For me there aren’t that many important changes.
“The Interface Options screen has been completely redesigned. AddOns that interact with the Interface Options screen will need to be updated.”
–> This probably means a lot of updating and tweaking 
“The friends list now has a notes field per friend. Click on the note icon to add a note for a particular friend.”
–> While this sounds pretty cool, for sometimes I don’t really remember all people in my friends list 
