As part of making the Workflow Builder generally available, we have just released a new option to quickly configure a progressive rollout. Choose from a few options, and we'll generate a multi-stage release workflow to gradually release your feature flag.
As part of this GA release, we've also added in more targeting features, approvals on the progress bar, and a detailed, read-only view of ongoing workflows. Building progressive rollouts and custom workflows is now generally available on Enterprise plans.