Not just more blades, they probably had to buy more racks and chassis too. (Chassises? What's the plural of chassis...?)
All servers are down because a lot of the major work is being done on the login and Duty Finder cluster, which is going from supporting 2 groups of DF at once to many more, and being able to support more logins. No more 1017 and 90000, I hope!
Even then, shoulda been able to install those in advance, eh? I think chassis is one of those singular plural words like fish or moose.
But yeah, I didn't know that about Duty Finder. Has to be added complexity there beyond just throwing resources at it. Keeping my fingers crossed this game really starts to hum when they get this ironed out.