Stripe gave Claude Fable 5 a real production task — migrating a 50-million-line Ruby codebase. It took one day. A human team would have needed two months. That single result reframes how Scrum teams should think about Sprint Planning, backlog ownership, and the Definition of Done. The article argues this isn't a threat to Scrum — it's its next evolution. Scrum Masters aren't being replaced; they're shifting from task managers to agent directors. The practitioners who develop that skill now will shape what Agile looks like for the next decade. AgileAIDev.com offers the training to make that transition.