Vercel Flags Now Supports Automated Progressive Rollouts
Shipping features safely just got easier on Vercel. On May 11, 2026, the platform announced that Vercel Flags now supports Vercel Flags progressive rollouts, a new way to gradually expose changes to users on a defined schedule, rather than flipping a switch for everyone at once.
Until now, teams using Vercel Flags could run weighted splits. That meant holding a fixed traffic distribution, like 50/50, throughout an experiment. Progressive rollouts work differently. Instead of a fixed split, they follow a predefined schedule that automatically shifts the traffic percentage toward the new variant over time. Each stage in the rollout defines a target percentage and a duration.
The practical benefit is significant. Exposing a change in stages means a regression affecting 5% of users gets caught before it reaches the other 95%. That early warning window is exactly what teams need when deploying changes to production systems at speed.
Vercel Flags progressive rollouts are available immediately in the Vercel dashboard and through a new vercel flags rollout CLI command. Both options give engineering and platform teams flexibility in how they manage releases, whether they prefer a visual interface or terminal-based workflows.
This addition fits naturally into Vercel’s broader push around safe, scalable deployments. Unlike traditional feature flag tools that rely on manual updates to traffic percentages, the progressive rollout system automates that movement entirely. Teams simply define the stages upfront and let the platform do the rest.
