I know I'm not going to make any friends with this post, but after seeing this happen so many times I have to put this out there.
Please understand, I have been on JOD for years and always pre-order the newest flagships, so I have TONS of experience with this. Those who have also been through this with the Note 7 and other flagship phones can attest to this:
They are not shipping your phones. It doesn't matter if your card was charged, your IMEI was issued, UPS received the information for the shipment, or UPS shows an estimated delivery date (looking at you, Sprint customers)
It doesn't matter how many email T-Mobile sent you about the shipping charge going through, your updated agreement, or text messages about it getting ready to ship. It's not happening.
For those of us who have been with T-Mobile for years, we all know what happened, but for those of you that don't, here is the deal:
T-Mobile used to ship their pre-orders early - I mean really early, and before all the other carriers. When T-Mobile continued to do this with Samsung Flagship phones (esp. the S7 & S7 Edge), it started to become an issue - other carriers started crying about it to Samsung, because it made them look bad when T-Mobile delivered earlier than they did. So Samsung changed the rules - the carriers were not allowed to ship until a set date given by Samsung, "or else". Hence the Note 7 pre-order thread choas, very similar to what you are seeing here. Samsung will only allow carriers to ship 2 days before the release date, which is why you see estimated ship dates of Sept. 13th-15th officially from T-Mobile.. however, they will likely start shipping the 12th because T-Mobile is still T-Mobile and they always try to skirt the rules a little bit.
However, do not expect anything to ship before the 12th. The only way this would change is if Samsung themselves allow it, because they shipped their former Note 7 owners phones already.. otherwise not only will the carriers make Samsung themselves look bad, but then the former Note 7 owners will be up in arms complaining that they didn't get theirs "first" as promised directly on Samsung's website.
Excitement is great, and I'm right there with you - but the constant checking of UPS to see if your shipment status changed is just a waste of time. If you really can't help yourself, just check in the wee morning hours of the 13th - you will see movement then, guaranteed. Anything before that would be an anomaly based on current practices.
Just my two cents. Hope I'm wrong here, but I don't think so.