Or at least very inattentive.
Blizzard just launched the trailer for WoW patch 4.2, and if patch 4.1 is any indication, it points to 4.2 being released on the 21st. However, the 21st is also the start of the Midsumer Festival. This is where I am an idiot:
Patch 4.2 is called “Rage of the Firelands”
The world event’s full name is: “Midsummer Fire Festival”
Someone kick my ass for not seeing this a long time ago.