- Tax calculation requests now include an optional "properties" field on each cart line for custom name‑value pairs (e.g., token, personalization).
- Partners can request up to five property keys to be returned for all line items, and only those keys appear in the request.
- API version 2026‑04 payload examples illustrate the new structure with before/after JSON.
Tax Partner apps can now receive cart line properties in tax calculation requests
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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.