The delivery dates are all off. Each carrier gets an initial upfront supply quote for sure. Apple says OK, Tmobile you get XXXX amount upfront. Tmobile bases their shipping estimates off of their on hand inventory. Those are usually the first batches of initial shipments that are already here in the US. As flights are coming in Sat/Sun/Mon/Tues/Wed most of us will see your ship dates fall in line with release day. Happens every year. When I was with VZW, i preordered the ip6 right when it launched online and was told OCtober 14th in 2014. I had my phone on Launch day no problem. Same with the 6s last year. Quoted a later shipping time, received on Launch day.
How do I know this? I know someone who works logistics and supply chain management with VZW
How do I know this? I know someone who works logistics and supply chain management with VZW