Good news
So like many of you, i was tired of waiting and sick of tmobile's BS
Was going through the apple.com today and out of curiosity looked up a 6+ 128GB SG for verizon and at&t near me. To my surprise, all of the stores near me had the 64/128GB in every color. So i've heard that if you pay the phone's full price and buy it at apple, it would come unlocked. I was originally going for one on verizon because i've heard more "success" stories when using it on t-mobile about verizon but when I got there they only had the phone in gold and only had a SG 128GB for at&t so I asked the apple guy that was helping me out if it would still work with t-mobile and he said "I'm very sure it will since it won't be activated using a SIM for any carrier when you buy it in full, if not you can return it on the spot". I had nothing to lose, my ETA for my tmobile order is 11/24 so I just paid for the phone, inserted my t-mobile SIM and BAM the t-mobile network appeared instantly (and yes with LTE, it will fully work as if it was a t-mobile iPhone) WIFI calling also works perfectly, using it ATM
So for those who don't mind paying the full price of the phone, apple stores have a much greater supply of the 6+ and chances are you can probably get one right now... Had i known this a month ago I would't have wasted a single minute dealing with t-mobile's BS order process..
Hope this helps someone
if you live in chicago, here's what's in stock ATM, as you can see there's space gray in 64/128, gold 128 and silver 128. You can't reserve it online though since you don't want to buy it with a contract so hurry to the apple store!