I pre ordered the iphone 6 plus, silver, 64GB 5 minutes after pre orders were open. I was told that i would receive my phone by the 19th. It shipped the 15th and my estimated delivery from fed ex went from 9/19/14 to N/A. It was supposed to be "overnight" shipping, yet i still haven't received it yet.
Over 4 Million phones were pre ordered and it will take awhile to get that pile moving. If you do not have a good delivery date from FedEx then delivery for next week will be a stretch.