Uploaded August 2025 | Updated September 2026, 1 day ago

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This week’s stream covers the top updates shaping the React and React Native ecosystem, including two standout releases:

🚀 FlashList v2: Shopify’s high-performance list library for React Native gets a major upgrade. Say goodbye to estimated sizes and native layout patches; v2 is smoother, smarter, and more accurate.

🧠 Vercel AI SDK 5: The latest version of Vercel’s AI SDK introduces speech generation, better agentic workflows, type-safe tool usage, and a fully restructured `useChat` hook. It's rapidly becoming a frontend-friendly toolkit for building LLM-powered apps.

We also cover:
👉 Matt Pocock’s upcoming AI SDK workshop at React Universe
👉 The React Compiler’s new directives (`use memo`, `use no memo`) and its path to stable release
👉 Next.js 15.4 reaching full Turbopack compatibility for production builds
👉 React Native Sandbox from Callstack for secure, isolated mini-apps
👉 A deep dive into the past decade of JavaScript runtimes and engines

See you at other Callstack live streams and events ✨ clstk.com/45uc1pj
Check out more content from Callstack 📚 clstk.com/4l4FiLS
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