Hi there - are there any more details on the POS UI Extensions developer preview for the pos-cart-update-event-observe
target?
As I understand it, it seems to include some new targets that we’ve been highly anticipating like cart event observations and mounting actions to the cart line items.
The 2025-07 docs hint that these targets are available, but they’re not options in the Shopify CLI to scaffold with, nor is there an option to create a development store with the POS UI Extensions preview yet.
So it looks like it’s halfway published but I can’t find a way to integrate them into a POS extension.
I have many merchants waiting on functionality that’s tied to this system, so any tips would be really appreciated.