I just found this in the apple store website:
This may be of interest to people on the fence about buying now or waiting for next week. At least if the issue is price and not actual updates.
Should Apple reduce its price on any shipped product within 10 calendar days of shipment, you may contact Apple Sales Support at 1-800-676-2775 to request a refund or credit of the difference between the price you were charged and the current selling price.* To receive the refund or credit you must contact Apple within 14 business days of shipment.
This may be of interest to people on the fence about buying now or waiting for next week. At least if the issue is price and not actual updates.