I've been tracking worldwide ship times on the Apple Store since pre-orders begun, and they actually went relatively smoothly for the 6s (not so much for the 6s Plus).
For anyone who's interested, here's how worldwide ship times on the Apple Store look like as of today (for anyone looking to order an iPhone 6s / 6s Plus now):
http://iphone-inventory.blogspot.com/2015/09/iphone-6s-pre-order-tracker.html
For anyone who's interested, here's how worldwide ship times on the Apple Store look like as of today (for anyone looking to order an iPhone 6s / 6s Plus now):
http://iphone-inventory.blogspot.com/2015/09/iphone-6s-pre-order-tracker.html