The updateCart standard action now updates cart attributes, and a new shopify:cart:attributes-update event fires whenever an attributes update is initiated. Before this, changing an attribute meant calling the Storefront API yourself, and nothing told your app when one changed.
Summary extracted from the official source text. Verify details on the source page.
| Platform | Shopify |
|---|---|
| Effective date | No date published |
| Precision | n/a |
| Published | 2026-08-06 |
| Categories | Announcement |
| Tags | Platform, Update |
| Official source | Shopify developer changelog ↗ |
| Fetched | 2026-10-17T03:44:00+00:00 |
| First seen | 2026-10-17T01:05:46+00:00 |
| Status | Listed by the source |
| Stable ID | shopify-78a396b7cc · JSON |