- Added read‑only `Discount.rollouts` connection in Admin GraphQL API 2026‑10; apps must request the `read_rollouts` scope.
- Discounts included in Rollouts now require merging rollout schedule, allocation, and treatment data with existing `startsAt`/`endsAt`; partial‑traffic rollouts apply only to the Online Store.
- Earlier API versions change filtering logic, so apps may need merchant re‑authorization and updated handling of discount availability.