I just got off the phone with T-Mobile and they said Apple gave them an estimate of 4-7 weeks for orders that do not have tracking numbers. They didn't give more details unfortunately. Also found out that I had two orders instead of one so I ended up canceling both. I'll wait and see what the Nexis 6/X has to offer.
I hope it has good battery life. Just another choice that I might have if I don't get this phone soon.