Blizzard has just updated the news section of the European site with a welcome announcement. European players will now be able to finally merge their Battle.net and World of Warcraft accounts into one shiny new entity.
The process takes about a minute and, after a cool sound effect, you'll see Wrath of the Lich King appear in your games section. The only thing you need to remember is you will need to put in the email address associated with your Battle.net account in the WoW login screen rather than your user name. So, without further ado, go forth and merge!