- Cart AJAX and Storefront Cart GraphQL APIs now correctly process simultaneous add‑to‑cart requests instead of dropping them
- When request volume exceeds limits, the APIs return conflict responses (HTTP 409 for AJAX, “CONFLICT” error for GraphQL)
- May require theme or storefront adjustments if duplicate requests were previously relied upon
Improved concurrency handling in the Cart AJAX API and Storefront Cart GraphQL API
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admin.app.intent.link intents now open as a full‑page navigation instead of an overlay modal
Adds cart session attribution and cart attributes for richer checkout data.
Added the `shop_campaign_insights` schema to ShopifyQL, letting apps query campaign performance data using the existing `shopifyqlQuery` field with the `read_reports` scope.