Great tip! My 64gb Space Gray LTE model is in Tennessee and should arrive tomorrow. Apple still says it is "preparing for shipment."
I once found myself fuming at 9am on release date of a new iPhone (3GS, I think) wondering why my first-in-line pre-order still said preparing for shipment on the day it was supposed to be arriving.
Then 9:15 rolled around and the doorbell rang. Phone delivered in hand and the site STILL said preparing for shipment.