I just got off the phone with Best Buy.
A) The rep said that orders will NOT be canceled until they receive shipments and send out the units. When they run out all other orders will be canceled. She didn't exactly sound like she was an expert on the subject, but still..
B) There is NO order to the last four digits of the order numbers. Those numbers are NOT in order, and they do NOT represent a number in line for one of the Best Buy units.
C) Any and all people that were charged on their credit cards were using Debit Cards. Companies will charge the full amount for authorization and then refund the money after the authorization is complete. Then once the unit is shipped you will be charged in full.
D) She confirmed that this was indeed legit, and that all orders had been received.
I have a feeling there will be more to this come Monday, but I was able to change my shipping to 2nd day and I was able to confirm all this. It should at least put some rumors to bed on this board...