As soon as you have this information, ....y
1 - # of people that want an I-5 this week
2 - # of people that did preorder and will not be standing in line
3 - # that each store will have
4 - # of each type of phone, memory, color, carrier
5 - # of people that will hit that store vs another
Then, and only then will you have an answer. Comparison to last year or last model are of little value.