October 2026 for React and AI Devs: Next.js 16.4, TypeScript 7.1 Beta, a Big TanStack Month, Convex 1.47 to 1.49
In October, the Next.js team released Next.js 16.4, which makes Cache Components the recommended default for all apps and adds agent-oriented tooling including `next upgrade --agent`, `experimental.agentUpgrade` and `exp…