- Shopify will stop setting the _shopify_y and _shopify_s cookies on merchant storefronts as of Jan 1 2026.
- Code that reads these cookies must switch to the Web Pixels API: use event.clientId for the former _shopify_y and create an equivalent session‑length cookie via browser/Web Pixels APIs for _shopify_s.
- Update any internal cookie access and related documentation accordingly.
_shopify_y and _shopify_s cookies will no longer be set
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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.