Vercel Blob auto-optimizes images on upload; Next.js 16.3 ships
Vercel's platform drop trims image pipelines, sandboxes workflow code in QuickJS, adds a route-speed test, and pipes model metadata into your traces.
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Optimize images in the same call that uploads them
@vercel/blob 2.7.0 adds an optimizeImage option to put() and a new putFromUrl() method, so images get resized and reformatted on the way into storage — no separate image service or build step. Handy for user avatars, OG images, and upload-heavy apps.
Next.js 16.3 can test how fast a route loads
A new instant() test helper asserts navigation speed, so you catch slow routes in CI instead of in production. Vercel demoed its v0 agent auto-applying instant-route fixes across an app.
Run workflow steps inside a QuickJS sandbox
The Workflow Development Kit (5.0.0-beta.40) adds an opt-in QuickJS WebAssembly VM (WORKFLOW_VM=quickjs) plus a cancelRuns helper to bulk-kill in-flight runs — tighter isolation for agent-generated code.
AI SDK tags every model call with provider metadata
Provider metadata is now exposed on language-model-call callbacks and OpenTelemetry spans, so token usage and provider details land in your traces per call — no manual instrumentation.