You know the hardware upgrades mentioned on Thursday? Well, some of them are already becoming reality. Three US realms will be brought down at 4:00 AM PDT for a scant two hours in order to install short-term hardware upgrades. There's no detail on what exactly is being upgraded, or what precisely the upgrades are expected to accomplish - though all must hope for overall performance improvements.
The lucky (or unlucky?) realms in question are Arthas, Bloodhoof, and Stormrage. The response to this upgrade seems mixed - many with the opinion that it's too little too late, and many more complaining that their servers need upgrades more urgently. However, what performance improvements even these servers will gain is still left to see.