Clarification about "Ship and pickup in one order" rollout planned for July 2027

[Paige-Shopify]

@Elia_Germanetto could you post these questions in the existing feature preview thread instead? I think others following this rollout would benefit from seeing the answers there too:

Ship and pickup in one order is coming. Test now in feature preview

Shopify Plus and Enterprise merchants will soon be able to enable a single checkout experience where customers can choose both shipping and store pickup within the same order. This change impacts how delivery and fulfillment information flows through checkout. If your app reads, calculates, or displays delivery and fulfillment information, the testing window is open now. Please make the necessary updates before this rolls out to merchants. >> Learn more: Enable feature preview | Read the testi…