What changed in your stack this week, and what to do about it.

$ git log --since="1 week"

#1 September 23, 2026

The Full-Stack Upgrade Map: What to Patch, Plan and Watch (September 2026)

• ✓Next.js 16.3.6 fixes a critical RCE in next/og (Sept 22)
• ✓npm 12 no longer runs dependency install scripts by default
• ✓TypeScript 7 is native and 8 to 12x faster, but not a drop-in upgrade
• ✓PHP 8.6 RC1 lands this week, with the final release on Nov 19