Workflow SDK cancellation

Workflow SDK 5 beta supports AbortController and AbortSignal across workflow and step boundaries, with signals staying durable across suspensions and deterministic replay.

Vercel | In Edition 39, Saturday 20 Jun 2026

SOURCE Vercel, Workflow SDK now supports in-flight cancellation

Added to The Deploy Log Tuesday 15 Sep 2026, updated Thursday 17 Sep 2026. Read Edition 39, the edition that carried it.

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