[bardam]

If by the future, you mean five years ago: https://techcrunch.com/2014/01/18/amazon-pre-ships/

"Amazon has filed a patent for a shipping system designed to cut delivery times by predicting what buyers are going to buy before they buy it — and shipping products in their general direction, or even right to their door, before the sales click even (or ever) falls."

Realistically they were looking at items added to your cart but not yet purchased, and moving them to a closer distribution center in case you purchased.