I would hope that it gets done sooner than later. Had a 6S with a serial from a bad batch and sent it to Apple for repair/replacement. They refused to fix it citing "3rd party modifications" with no further explanation or evidence. It wasn't until I escalated the issue up 3 levels and provided photos of the phone in stellar condition at the time of shipping did they finally back down. The experience bothered me so much that I switched to Android. Your post made me realize that perhaps engineers are so overwhelmed with 6S repairs that they are just declining them.