I'm really hoping preorders will start in December so I can get my character boost. Need a max level Alliance priest for this expansion in which a lot of content will be mutually exclusive, and I'd like to still have the time to gear it up/finish class campaign so I can get the challenge appearances before they become unavailable.
That is, I'm assuming the boost will just give you lvl 110 and a normal weapon with none of the artifact and Legion content unlocked, even though that would essentially gimp you mechanicswise until 8.0.