How did I received next day air saver shipping from UPS with my Pre Order of my iPhone 6?

Not that it's a bad thing I'm just wondering how I got the shipping option I didn't select next day or anything like that I just pre ordered it from Verizon.com and then when I went to track the order that's what it said so if someone could explain that would be great today's date is 9/16/14

Stranger things have happened
my son ordered something one year that he received the very next day from a state on the east coast(Calif.here)

The seller of the pre-ordered iPhone 6 was who decided to send the item using UPS Next Day Air Saver shipping, an improved service for the customer. This will mean the parcel shipped on 16 September would be delivered to the destination address on 18 September.

https://wwwapps.ups.com/ctc/request?loc=en_US

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