I did a trade in as well, but my ship date for my S7 Titanium shows 11/02-11/09.
I oddly just received an email from FedEx saying I'm getting a package from AI (Apple) on Monday 10/18. I figured this must be for the trade in box? My iPhone 13 trade in box showed up via UPS with a FedEx return label included, so I'm not sure. Maybe it's the sport band that I ordered the watch with? Apple's order status isnt showing me anything.