- Data Cache exits beta and is replaced by Runtime Cache; fetch caching and unstable_cache automatically switch on each Next.js version.
- Storage allocations increase (8× for Pro, 10× for Enterprise) and unbilled reads/writes are now charged at Runtime Cache rates ($0.40 M reads, $4 M writes), with Hobby free tier and Pro credit.
- Migration schedule: new teams default to Runtime Cache from Oct 30 2026; existing Hobby teams migrate Nov 29 2026, Pro and Enterprise receive notifications or account outreach; early opt‑in available.