- Apps can now subscribe to events for Order, Collection, InventoryItem, InventoryShipment, Location and to metafield changes on Product, Order, Customer, Collection, and Location (ProductVariant via Product topic).
- Introduces targeted metafield triggers so apps receive payloads only for specific metafield namespace/key changes, supporting both $app and regular metafields with enforced access control.
- Events remain in the unstable API version during developer preview; subscriptions without triggers or with parent triggers also receive metafield change events.